The Silent Saboteur of Your Leadership: Why Sleep is the Ultimate Form of Self-Leadership

I have been noticing it regularly lately in conversations with entrepreneurs and leaders: a deep, almost unspoken fatigue. We run from deadline to deadline, fly from one crisis to another, and soothe our conscience with the thought that we will make up for those missed hours of sleep over the weekend. But reality is more stubborn. Sleep is not a luxury item that you can cut back on at will. It is the very foundation of your functioning.

Recently, I read an internal study by McKinsey that deeply moved me: more than 60% of their consultants structurally get too little sleep. And unfortunately, that percentage is no exception. Whether you look at the business world, healthcare, or the non-profit sector: over 60% of all managers struggle with sleepless nights or a chronic lack of sleep.

The direct consequence? For more than 65% of these leaders, the quality of their decisions deteriorates rapidly. And that is not only harmful to themselves, but especially to the people they lead and the organizations they serve. Competence without character is dangerous, as we sometimes hear. But I would like to add to that: competence and character without healthy sleep are simply clipped of their wings.

The Myth of the 'Short Sleeper'

We all know the stories of the legendary, hyper-productive leaders who claim to need only four or five hours of sleep. There was once a famous German philosopher who proudly proclaimed: "In heaven, I can sleep plenty!" He eventually died at the age of fifty, completely burned out and physically at the end of his strength. That is not the path we want to walk.

Let's look at the facts. For 98% of the world's population between the ages of 25 and 60, 7 to 8 hours of sleep per night is the absolute lower limit to keep functioning healthily. Only an extremely rare 2% genetically get by on 6 hours of sleep without suffering damage to their brain, heart, or emotional health.

Rather, take Albert Einstein as an example. He was not only one of the most brilliant thinkers in our history, but also an avid sleeper. Einstein slept an average of 10 hours a night throughout his life. Why? Because he understood that his mind, his emotions, and his body needed time to regenerate. He knew that deep insights do not arise in an overstimulated, tired brain, but precisely in the peace of the recovery phase.

What Does a Healthy Night's Rest Give You?

As an architect by training, I like to look at the supporting structures of our lives. Your leadership is like a building: it rests on pillars and needs a solid foundation. Resilience grows, as we often say within xpand, from four sources: healthy movement, healthy nutrition, silence, and... healthy sleep.

When you invest in your sleep, you invest directly in the quality of your leadership. This is what a healthy night's rest concretely brings you:

• A fresh mind and a healthy body: Your brain is literally washed clean during the deep sleep phases.
• A positive baseline mood: You are emotionally more stable and resilient in the face of setbacks.
• Room for healthy relationships: With a rested mind, you react more gently, with more empathy and patience.
• More creativity and innovative power: Your brain makes connections that you don't see during the day.
• Long-term vitality: Protection of your heart, blood vessels, and cognitive functions in the long run.

As the well-known neuroscientist Paul Zak shows in his research on high-trust organizations: employees in healthy, vital companies experience significantly less stress and burnout, and have much more energy. But that always starts with the leader who models it themselves. No healthy leadership without healthy self-leadership.

Pillar 1: Preparation is Everything

A good night's sleep doesn't just start when you close your eyes; the preparation starts hours before. Think of it as gently letting a sailboat glide as it approaches the harbor. You don't throw out the anchor with a sudden jerk at the very last moment.

• Digital offline time: Ban all screens (phone, laptop, television) from your field of vision at least an hour and a half before you go to sleep. The blue light inhibits the production of melatonin, the hormone that tells your body it is night.
• No heavy meals: Avoid large meals after 8:00 PM. Your digestion needs rest, otherwise your body will keep running at full speed at night.
• No alcohol as a nightcap: Although alcohol makes you fall asleep faster, it dramatically disrupts REM sleep (the phase in which you process emotions). Preferably do not drink alcohol after 8:00 PM.
• No late conflicts: Do not enter into difficult discussions after 9:00 PM and certainly do not open your business email anymore. Nothing keeps your brain awake as effectively as an unresolved problem.
• The evening walk: A walk of 20 to 30 minutes in the fresh air does wonders for sleeping through the night. It helps you to literally and figuratively leave the day behind you.

Pillar 2: Your Bedroom as a Small Paradise

Your bedroom should be an oasis of peace, a place reserved exclusively for recovery and intimacy.

First of all, ensure an optimal mattress and a good pillow. We spend a third of our lives in bed, so do not skimp on this. In addition, make the room completely dark. Even the smallest red standby light of a device or the glow of a lamppost can disrupt your biological clock and activate stress hormones through your skin and eyelids.

Ensure a constant supply of fresh air by leaving a window slightly open; a cool, well-ventilated room ensures a deeper and calmer sleep. And finally: resolutely ban the smartphone and laptop from the bedroom. The presence of these devices unconsciously reminds your brain of work, obligations, and alertness.

Pillar 3: Rhythm is Essential

Our brains and bodies thrive on regularity. Think of the classic three R's: Rest, Cleanliness (Reinheid), and Regularity (Regelmaat). In our modern times, we like to add 'rhythm' to that. Rhythm brings peace to your nervous system.

Therefore, try to go to bed and get up at fixed times as much as possible, even on weekends. For me personally, a fixed rhythm works fantastically: I go to bed at 10:30 PM, after which I read a nice, relaxing book for another half hour (no professional literature!). At 11:00 PM the light goes out and at 7:00 AM the alarm goes off. This rhythm gives me the solid structure I need to be ready for my clients and team with energy and focus every day.

"It is not: 'I trust you because you perform', but 'I entrust something to you because I believe in your character.' And building character starts with the discipline of taking good care of yourself."

You don't have to do everything perfectly starting tomorrow. Self-leadership is a journey we take in small, steady steps. Where can you draw a small boundary this week to protect your night's rest?

Which of the three pillars — preparation, the sleep environment, or rhythm — demands your attention the most right now?

Warm regards,

Paul Donders