Leadership expert Simon Sinek is the author of Start With Why and Leaders Eat Last. He teaches leaders and organizations how to inspire people and is based in New York.

Simon Sinek is obsessed with the power of friendship right now. “Friendship is the ultimate bio hack,” Sinek says on Inc.’s From the Ground Up podcast this week.

In 2005, Simon Sinek ’95 seemed to have it all: his own advertising and marketing business, high-profile clients like General Electric and ABC Sports, an upscale apartment in New York City, expensive ...