The Strength of Stoicism

“You have power over your mind, not outside events. Realize this, and you will find strength.”

Stoicism teaches that external forces don’t control us—our reactions do. Power comes from mastering thoughts and emotions; only then can we accept uncontrollable circumstances and navigate through them. In leadership, this mindset fosters resilience—focusing on what can be controlled versus what cannot. As Marcus Aurelius believed, strength arises from clarity of thought and self-mastery.

“…I just don’t focus on it. I don’t focus on what you can’t control.”

This approach focuses on one’s actions and resilience. During the 2014 ignition switch crisis, Barra prioritized internal reforms and accountability—rather than external criticism. Her leadership transformed GM's culture, emphasizing safety and transparency over damage control. By focusing on what could be controlled, she upheld the Stoic ideal of calm, measured responses in the face of adversity.

“If you could understand impermanence deeply, you would develop more equanimity. You would not get too excited about either the ups or downs of life.”

Under Nadella’s Stoic leadership, Microsoft has navigated both successes and failures with a calm, forward-thinking approach. By embracing change and staying grounded, Nadella has transformed the company’s culture, focusing on innovation and learning from every experience—win or failure.

“Stay focused on the long term and don’t get distracted by the noise.”

Tim Cook’s leadership at Apple reflects a Stoic commitment to long-term thinking. While others may be swayed by trends or pressures, Cook keeps Apple focused on innovation, sustainability, and privacy—ensuring alignment with its core values. His disciplined clarity amidst distractions embodies Stoic philosophy.

Each of these leaders—Barra, Nadella, and Cook—embody Stoic principles in their actions, focusing on what they can control with clarity, resilience, and purpose to drive lasting change. Our final words I leave to the great Stoic, Marcus Aurelius.

“Waste no more time arguing about what a good man should be. Be one.”