capacity equationModern leadership demands more than managing time and tasks. It requires being a master of personal capacity, and this is a matter of leading yourself first and foremost so that you can effectively and organically lead others, projects, or communities. For women in leadership, particularly in high-stakes industries like finance or law, the ability to protect and expand energy is a decisive leadership skill.

Female leaders are disproportionately at risk for burnout due to both visible and invisible labor (balancing intense workloads with emotional awareness, organizational care, familial responsibilities, and relationships). According to Deloitte’s survey Women @ Work: A Global Outlook, more than half of women in leadership roles report feeling burned out and for many, their stress levels are increasingly growing. The message is glaringly obvious that time management is no longer enough. Sustainable performance and success requires a new approach: energy intelligence.

Rethinking the Capacity Equation

Capacity can be thought of as the dynamic relationship between what fuels and what depletes. While time is finite and we cannot create more of it, capacity is expandable, but only with intention. When leaders continuously expend more than they replenish, they move into cognitive fatigue, emotional depletion, and eventually, diminished impact.

Neuroscience has long shown that chronic stress impairs access to the prefrontal cortex, the part of the brain responsible for focus, empathy, and decision-making. When leaders operate in constant overdrive, they are quite literally functioning with less of their brain available. In a chronically stressed-out state of being, loss of resilience and cognitive rigidity are symptoms that may arise in response to the mental overload. The cost isn’t just personal, it ripples into the culture of teams and organizations because it derails your capacity to show up as your best self.

The Myth of Infinite Output

In our societal constructs, the path to success has been built on proving worth and value through unrelenting output. Yet this model is not sustainable and no longer necessary. The most effective leaders today aren’t those who give endlessly, but those who replenish strategically.

High-performing women who learn to manage their capacity shift from running on adrenaline and overcommitting to leading from alignment. They understand that clarity, creativity, and calm are not luxuries; they’re the foundation for performance that lasts let alone their own fulfillment.

Three Shifts to Expand Capacity

1. Move from time management to energy stewardship.

Traditional productivity frameworks focus on optimizing hours and hacks. But energy is made up of physical, emotional, mental, and spiritual well-being, and it’s what determines the quality of those hours. As Tony Schwartz and Catherine McCarthy argue in Harvard Business Review’s “Manage Your Energy, Not Your Time”, sustained performance comes from rhythmic renewal, not relentless effort. Intentionality is critical when it comes to designing each day around energetic pulls (demands on your energy) and extends (where you choose to give your energy).

Energy stewardship starts with awareness. We can regularly ask: Which activities energize me? Which consistently drain me? The answers reveal where to realign work, connections, and personal times toward what fuels vitality and effectiveness. Over time, prioritizing high-energy activities, such as creative endeavors, mentoring, and strategic thinking, creates greater output with less depletion.

2. Replace routines with intentional rituals.

Routines are autopilot behaviors done to check a box; rituals are conscious choices done to refuel. When leaders infuse intention into daily transitions like beginning the day, entering meetings, or closing the laptop, they create micro-moments of renewal.

Small rituals, like three deep breaths before a presentation, brewing coffee or tea in the present moment without a phone in hand, or a five-minute gratitude practice at the end of the day, reset the nervous system and sharpen focus. Rather than look at intentional pauses as inefficiencies where we could be doing something else, we need to see them as self-leadership strategies and energetic hygiene. They enable leaders to meet the next challenge with more presence and grounding instead of reactivity.

3. Shift from proving to preserving.

The instinct to prove competence, reliability, or capability is deeply ingrained, especially among women who’ve navigated demanding environments. Cultivating influence is about preservation through protecting the clarity, energy, and perspective that empowers leaders to operate at their highest level.

Preserving energy is not a retreat from ambition; it’s how ambition endures through inner alignment. Leaders who set boundaries, delegate strategically, and integrate rest model sustainable success for their teams. They demonstrate that resilience isn’t built in exhaustion, rather it’s built in recovery.

The New Leadership Power

Sustainable leadership is not about doing less, slowing down, or being less ambitious. Instead it’s about leading differently, and redefining power as the ability to remain centered, clear, and effective under pressure. When women leaders learn to manage their capacity, they not only elevate their own performance but also set a new cultural standard that well-being and excellence are not competing values.

The next era of leadership will not be defined by who can push the hardest, but by who can sustain the longest. Energy stewardship is not a personal wellness tactic, it’s a professional strategy and alignment is the future of leadership.

By: Erin Coupe is the author of I Can Fit That In and host of the podcast with the same name.

(Guest Contribution: The opinions and views of guest contributions are not necessarily those of theglasshammer.com)

words of wisdom 2025In 2025, a clear theme emerged from the leaders we had the privilege of profiling: meaningful leadership grows from the relationships we build, the self-awareness we cultivate, and the courage we bring to each new chapter. Across industries and backgrounds, these women shared the habits and mindsets that have shaped their journeys, including building personal boards of advisors, embracing discomfort as a catalyst for growth, strengthening EQ, and remembering to look beyond the demands of a single role to the broader arc of a career.

Words of Wisdom 2025 brings their insights together in this first installment, with Part 2 coming in future weeks. As we reflect on their stories, we will also explore how coaching can help leaders deepen these practices and accelerate their development. We are grateful for the candor and generosity each woman offered. Their voices continue to illuminate what intentional, authentic leadership looks like and the possibilities that open when we stay curious and committed to our own evolution.

On why networking matters

“In each stage of my career I’ve heeded the advice to build my personal board. It’s thinking about who are the five or six people to go to for very critical decisions? Why are they on your board? Why do they keep a seat on your board, or do you rotate them? They can be a mix of mentors, sponsors, or just people whose opinions you trust.”

Alexandra Wilson-Elizondo: Partner, Co-Chief Investment Officer of Multi-Asset Solutions (MAS), Goldman Sachs Asset Management

On leadership styles evolving

“As I moved higher in my career, I recognized the value of awareness and empathy, understanding different perspectives, styles, and what motivates the current workforce as it’s different from when I was a young professional.”
Today, her leadership prioritizes open communication and constructive feedback. “I have been focused on rebalancing my ‘get things done’ upbringing with understanding how people receive and digest information, and how they can grow.”

Daniela Shapiro: Senior Managing Director, HASI

On embracing change

“I’m not someone who loves change,” confesses Burger. “But one of the best pieces of advice I got—and now share—is to push yourself out of your comfort zone. Challenges can be scary because inevitably they involve change, but it leads to growth. It’s about taking calculated risks and being okay with change when you know it can lead to something better.”

Julie Burger: Co-Head of Public Finance, Wells Fargo

On finding strength in uniqueness through executive coaching

“I focused on how I could be more structured, more powerful, more impactful—so that my French accent became a strength. The firm provided me with a coach who helped me work on my communication and presentation style, which really made a difference. I also found having an external perspective, someone who listens and helps you understand how others hear you, to be invaluable.”

Pamela Codo-Lotti: Partner, Global Chief Operating Officer of Shareholder Activism Defense, Goldman Sachs

On the value of EQ in navigating client relationships

“Working with clients across industries and influencing multiple stakeholders requires emotional intelligence. Every corporation has a different culture, every CFO has a different way they like to be engaged. Understanding that and adapting your approach is critical.”

Alex Douklias: Vice Chair, Corporate Banking, Wells Fargo Corporate & Investment Banking

On building teams with diverse viewpoints and approaches

Marsland recalls a former manager who exclusively hired people with identical approaches. “You end up with a team that lacks diversity in thinking. I don’t think that’s great for business.”

“I want different perspectives, different strengths. One person might be great at presentations; another might excel in negotiations. As long as the job gets done, I don’t need everyone to work the same way.”

Jennifer Marsland: Head of Sales, North America, World Travel Protection

On not losing sight of the bigger picture

“It’s important to remember that your career and your job are two different things. Whether you are happy in your current job or not, you always want to think about your broader career trajectory outside of the present position…Keep up with LinkedIn and go to networking events. Don’t get so heads-down focused on being successful in your current job that you don’t also build connections outside in industry and peer groups.”

Christine McIntyre: Chief Financial Officer, Raftelis

On the impact of a coaching mindset

“My training as a coach has impacted me in foundational ways. That includes not letting fear drive decision making, because in coaching you learn how to look at the worst-case scenario and explore questions like, ‘how bad can it really be? What if that happens? What can you do about it?’ That mindset has impacted my ability to adapt and flex and pivot.”

Natalie Runyon: Content Strategist for ESG, Human Rights Crimes and AI in Courts, Thomson Reuters

On navigating a crossroads when confidence falters

“Firstly, ask this. What was the best moment in the last 12 to 24 months of your life? Often we are so focused on the summit, we don’t look back to see how much ground we’ve covered. So I ask people to find the best moment – personal and professional – and double-click into that moment to ask what you did to make that moment a reality. It did not happen by luck or chance. It was your strengths and talents that made it happen.”

Lisa Sun, Gravitas Founder & CEO & Best-Selling Author

How Coaching Can Accelerate This Wisdom

What ties all these insights together is the active work of becoming. Growth requires intention, perspective, and the willingness to look honestly at how we show up. That is where executive coaching becomes a powerful accelerator. Research consistently shows that coaching strengthens emotional intelligence, improves decision-making, and helps leaders translate insight into sustained behavioral change.

A coach helps you do exactly what these leaders describe: examine how you communicate, challenge unhelpful assumptions, reconnect with your strengths, and navigate uncertainty with more confidence. Coaching provides the structured space that busy professionals rarely give themselves, especially at this time of year, when reflection and recalibration naturally come into focus.

As we close out 2025 and prepare to step into 2026, consider how you want to lead in the year ahead. If this collection sparked recognition or reminded you of the leader you aim to be, take it as an invitation to act. Seek out an executive coach who can help you deepen these practices, expand your impact, and enter the new year with clarity, purpose, and intention.

Book your session today and start 2026 with intentional growth.

muay thai leadershipAfter moving to Singapore and stepping away from the intense pace of fintech leadership, I found unexpected lessons in Muay Thai, a sport that one needs to study the underlying culture to truly understand. Over a five-year period, I visited Thailand thirty times and interviewed world champion boxers such as Muay Thai Legend Chanchai Sor Tamarangsri.

Here are eight lessons I learnt from studying Muay Thai that apply to business.

1. Be conscious of your body language

Shattered after a gruelling few months running a financial technology software company, I decided to take a short break to train in Thailand. On the first morning, I was sitting on the side of the boxing ring at 7 a.m. at Rawai Muay Thai waiting for my class to start, stressing about next week’s meeting with my co-founders, which promised to be unpleasant.

The sun had already reached 38 degrees and I was the first student in the gym. One of the trainers was walking past when he abruptly stopped. He looked at me and said, “Better go home.” Taken aback, I challenged, “Why?” Putting his hands on my shoulders, he pushed me bolt upright, took my hands out of my lap where they were knotted together and lifted my chin. “Your body tells me, you can’t fight” he replied. “It looks small and weak. Think strong and you will be. If you can’t do that, better go to the beach.”

2. You must be resilient

Muay Thai training is gruelling. Not just the because of the physical aspects but mentally you have to be prepared. All Muay Thai trainers will tell you they can teach a student to have a perfect roundhouse kick, an incredible knee strike, but not courage or “heart”. You have to want to win and believe you can. Fighters that do not have heart may win the first or even the third round, but they are not going to last the distance. You can be smaller than your opponent but your spirit is everything. In fact it’s one with real physical consequences. Fighters lose eyes, suffer head injuries.

No matter how difficult a situation is at work, there are not going to be any physical dangers. No-one is going to knock you out. Turn up to your career like you would a Muay Thai fighter, with heart. If you can’t then perhaps question whether the career you have chosen to succeed in is right for you.

3. There are no short cuts. You have to prepare. You have to practice

Practice, practice, practice. How Muay Thai fighters physiologically approach every session, every exercise – in fact, everything they do – impacts their ability to perform technical skills under stress. They are keyed into what motivates them and drives them forward. Being fully prepared alleviates stress. If you know you have done your best, and have sought feedback from your colleagues and mentors, then there is every reason to believe you are going to succeed.

4. Walk away when you need to

Muay Thai fighters do not win by themselves. Boxing is a team sport and the best trainers love to share their knowledge. They want you to succeed and be the best version of yourself. You need to put the work in and show commitment. Learning Muay Thai is a two-way street, you can’t show up expecting to learn without putting in the effort. If you find yourself at a Muay Thai gym where the trainers are pushing you hard for private classes or on their mobile phones during sessions, walk away. Instantly. You are wasting your time. If you have co-founders who do not share your values, who shirk responsibilities and lie, cut a deal and move on. Muay Thai demands you make decisive decisions fast.

5. Control your emotions

Before entering a ring, Muay Thai fighters still their minds. They are calm. Think about how you would picture the gaze of a Monk, emerging from a mediative state. Envisage how peaceful and free of worry his eyes are. In Thailand, I had the honour of removing Kru Wah’s Mongkhon – a headpiece worn by Thai boxers while performing the pre-fight performance dance. Traditionally, these headpieces are still blessed by a monk and believed to possess special powers to protect and bring good luck to their wearer.

When saying positive words for the battle ahead, I was struck by Kru Wah’s relaxed demeanour. It was as if he had already won and was getting ready for bed after a good meal. Kru Wah’s fight was beautiful to watch. He executed each strike fast and effectively whilst maintaining his prima ballerina assoluta sense of balance. He was precise and exact regardless of the pressure being applied by his opponent.

When making a point or in tense situations, remain calm and take time to observe the body language and micro expressions of the people around you. That way you can better adjust to your audiences’ comments and insights. Have faith in the meeting strategy you have worked on with your colleagues and mentors and you’ll be sure to win the day.

6. Be grateful and give back

Mongkunpet was a young girl when I first met her in 2016. She had already fought 30 amateur boxing matches. At that time she was around 30 kilos. An exceptional athlete, Monkunpet has gone on to win national championship belts. During a fight in Phuket, she badly hurt her foot, breaking several toes. Somehow, she fought through the pain and won the match. The next day she limped into the training arena; formally bowed to each of the 12 teachers in gratitude, and limped out again. If a young girl can do this to thank her teachers, we should be able to find time to show appreciation to the mentors and teachers who selfishly helped us achieve goals. We should make a commitment to have mentees ourselves.

7. Choose a strategy that works for you

Once a Muay Thai boxer has successfully won a number of fights, their trainer will decide which fighting style best suits the student’s temperament. For example, Muay Femur fighters are best known for their high fight I.Q., patience and the ability to move between various styles of execution as needed. They are phenomenal at counterattacks. In contrast, a Muay Mat fighting style involves adopting a forward-moving aggressive approach and deploying explosive punching combinations to ultimately knockout their opponents.

Similarly, in business, you need to think about which competitive strategy works best for you. Are you a deeper thinker who prefers not to rush in, or more on the front foot when it comes to pushing forward your narrative… or neither of the two? Give thought to the type of company culture where you can excel wherever you are on your career journey.

8. Focus

You have to be 100 per cent present in Muay Thai training. It is not like a spin class where you can ponder over your lunch choices. When you have a hectic lifestyle, pressures at work or with juggling family commitments can accumulate and cause stress. Just training a couple of hours a week will make a difference. Because your mind will be at rest from thinking about other people or situations. Learning to focus completely is a terrific way of giving your mind a break.

 

Sally Clarke at her Muay Thai training gym

By: Sally J Clarke is a senior leader in the technology and art sectors. She has received prestigious awards and been invited to contribute to industry initiatives such as: Amazon Web Services Female Founders, (2022/2023), the La Salle College of the Arts Incubator Fund Award (2014), British Tech Advisory and the SunGard (now FIS) CEO Award. Sally frequently share insights on leadership, innovation, and the power of creativity. Her debut novel Ringside Gamble is available on Amazon and all good book stores.

Deborah Overdeput“I can look back and point to the promotions, the double-digit growth, all the successes along the way, but I never truly believed in my success until I stepped out on my own and built a business,” says Deborah Overdeput.

That moment of independence was not just a career milestone, but a shift in how she saw herself as a leader: someone who thrives on curiosity, creates clarity where there is none, and knows when it is time to pivot.

From Rocket Science to Market Growth

Overdeput began her career as a rocket scientist, trained in space station computing and fault-tolerant systems. Yet, when she relocated to Belgium for an engineering role at Swift, she felt restless. “I realized I really liked talking about what we were doing rather than actually building it. Once I got bit by that bug, I knew I had to transition into marketing.”

With no formal background in marketing, Overdeput made a bold decision: she would become a Chief Marketing Officer in technology. That goal guided every step she took, from mastering the fast-changing dynamics of marketing to taking lateral moves and pushing herself into stretch roles that expanded her skills and influence. At SunGard, her determination paid off as she advanced from marketing a single product line to overseeing more than 40. Later, at Sapient, she led the repositioning of a 250-million-dollar business unit and helped drive it to more than 500 million dollars in under five years.

What she took away from those years was simple: strategy only works if it is rooted in reality. “If you do not understand how products work, how teams operate, and what customers actually need, it is hard to make the right choices. I have always believed strong leadership starts with really knowing what is happening on the ground.”

Creating Clarity in Uncertain Times

Overdeput believes leadership matters most when circumstances are ambiguous. “You do not need leadership when everything is well defined. You need leadership when the path is unclear and the pressure is high. My role has always been to take that uncertainty, translate it into strategy, and help others see the way forward.”

That principle carries into her role today as COO at Innovative Systems, where she leads global product management, marketing, operations, and human resources. “My focus is on enabling human potential by aligning talent, strategy, and resources so that even in shifting markets, our people can do their best work and deliver meaningful impact for our clients.”

Innovative Systems is also known for building long-term relationships with clients, some spanning decades. Overdeput emphasizes that trust is both a differentiator and a responsibility. “Our clients count on us not just for technology, but for partnership. Delivering on that promise, year after year, is what keeps us relevant and resilient in a shifting compliance landscape.”

Lessons in Confidence and Voice

Before her COO role at Innovative Systems, Overdeput built a successful consultancy as a fractional Chief Marketing Officer. Working with a range of technology and financial services clients, she discovered a new level of confidence in her own capabilities. The experience affirmed her expertise and sharpened her ability to deliver high-impact results across different businesses and industries.

She also discovered her voice had changed. “Earlier in my career, as a woman inside large companies, I often found my ideas ignored until repeated by a man. Over time, I learned to strengthen my voice, to claim my authority. Today, people stop and listen not just because of my title, but because they know I speak with conviction and experience.”

That conviction shapes her leadership style today. “I try to listen more and advocate for voices within the company. Leadership is not about being the loudest person in the room. It is about making sure the right voices are heard.”

The Power of Networks and Mentorship

For Overdeput, networks and mentorship are essential leadership tools. She has mentored University of New Hampshire students since 2009, often those with math or computer science backgrounds like her own. “I tell them, start early. Build your network, get on LinkedIn, connect with your peers. Those relationships are career changing.”

Mentorship, she says, has shaped her as much as her mentees. “Working with students helps me see how the next generation thinks, what motivates them, and how they want to grow. That perspective is essential for any leader who wants to build teams that are not only high-performing today but also ready for tomorrow.”

It is also what inspired her latest project: Walk Away, a book she is co-authoring with Sally Clarke. “The book brings together stories of women who reached pivotal moments and chose to leave situations that no longer aligned with their values or ambitions. Hearing these stories has been like sitting with different mentors. Each one has helped me rethink the situations I face in my own career and the challenges my mentees bring to me. One of the women said, ‘Walking away was the boldest form of leadership I have ever practiced.’ That stayed with me, because leadership is often about knowing when to stay the course, and when the braver choice is to step into something new.”

Building Teams Through Talent

For Overdeput, the heart of leadership lies in building strong teams. “High-performing teams are not built by accident; they come from spotting potential others might overlook and giving people the chance to prove themselves. One of my best hires did not meet the checklist on paper, but I knew she had what it would take. She went on to become a star. As Steve Jobs once said, it does not make sense to hire smart people and then tell them what to do. My role is to create the conditions for their talent to shine.”

Her approach is less about rigid processes and more about creating conditions for people to thrive. Weekly check-ins, open conversations, and celebrating wins keep teams connected and aligned to a bigger purpose. “One of the most rewarding experiences is when a team pulls together to deliver something bigger than any one individual could achieve. I make it a point to celebrate those moments, because they remind me that leadership is not about one person’s actions, but about creating the environment where everyone’s contributions matter.”

Leading With Intuition and Humanity

Her leadership philosophy is also shaped by yoga and meditation, which she has practiced for more than 30 years. “Yoga taught me how to breathe through stress and build core strength, not only physically but also in the way I show up as a leader. Meditation taught me to quiet the noise, to see the world beyond my own ego, and to stay present for others. Together, they remind me it is not about me, it is about enabling others. Maya Angelou captured it best: people will forget what you said and what you did, but they will never forget how you made them feel. That truth stays with me, because I have seen it reflected back in the people I have supported, watching their success become part of my own impact.”

And from her mother, she learned the value of having a cheerleader in your corner. “She showed me that sometimes what you need most is someone who believes in you, no matter the obstacles. That is the kind of leader I try to be for others.”

Looking Ahead

Asked what drives her today, Overdeput points to impact. “I want to look back and know I left a stamp, that I built teams, grew businesses, and created opportunities for others to succeed. For me, leadership is about enabling human potential in ways that last, so the people and organizations I have touched continue to thrive long after I have moved on.”
That philosophy ties her trajectory from rocket science to COO together. As she puts it: “Great leadership means building great products, growing great people, and creating clarity in a complex world.”