When the traits that make you brilliant in one role become liabilities in another.

The internet is full of lists — 10 qualities of a great leader, 12 necessary traits, 6 characteristics of effectiveness. But these lists share a fundamental flaw: they assume leadership is about collecting the right attributes. What they miss is that no trait operates in isolation, and no trait is universally effective. The same decisiveness that saves lives in a clinical setting can marginalize a team in a boardroom. I saw this firsthand with Dave, a physician-turned-biotech CEO who had recently lost two senior leaders and couldn't understand why. Dave was brilliant, curious, humble, and decisive — all the things you'd want in a leader. But his team told a more complicated story. When solving hard problems, Dave would invite discussion, listen carefully, and then suddenly announce the answer and move on — leaving his team feeling dismissed. His strengths hadn't disappeared. They had simply exceeded their useful range. Helping Dave recognize the moments when his instincts were working against him — rather than trying to change who he was — became the turning point. That's the real work of leadership development: not acquiring better traits, but developing the self-awareness to know when yours are serving you and when they're not.

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