How growing a coaching tree defines your true legacy

Executive overview

Most people measure success by personal accomplishments. The more durable measure is who you helped succeed along the way.

Greg Popovich built the most extensive coaching tree in NBA history — not by cloning himself, but by opening doors to a diverse group of leaders. The same pattern runs from George Marshall to Socrates to Emerson.

The candle that lights another, which lights another: that is how worlds are illuminated.

What a coaching tree is

• A coaching tree tracks everyone a leader has discovered, hired, mentored — and what they go on to accomplish
• Popovich's tree is so vast one writer called it a coaching forest
• Nearly 30% of all NBA coaches at one point had worked under or played for Popovich
• His proteges independently won 11 championships as head coaches
• Two coaches he mentored faced each other in the 2022 NBA Finals

Why most people miss this

• Default mode is self-focus: how to get a shot, a bigger one, a better one
• Treating success as zero-sum — helping others feels like a threat to your own position
• This is wrong: there is room for far more people to succeed than currently are

The pattern across history

• George Marshall advocated for Eisenhower, Bradley, and Patton while rivals lobbied for their own promotions
• Socrates → Plato → Aristotle → Alexander the Great
• Emerson wrote to an unknown Walt Whitman: "I greet you at the beginning of a great career" — Whitman used it as a blurb on Leaves of Grass
• Frederick Douglass mentored Ida B. Wells; Martin Luther King Jr.'s tree includes John Lewis, Andrew Young, and Diane Nash
• Garry Shandling, encouraged by George Carlin, went on to mentor Judd Apatow, Adam Sandler, and Sarah Silverman

What this looks like in practice

• Give someone a shot who doesn't look exactly like you
• Open doors without expecting credit or reciprocity
• The goal is extending a ladder to unique individuals reaching their own potential — not making replicas of yourself
• Multi-generational impact compounds: the people you never meet may be shaped by those you did