Who is the one person, event, or influence that made you who you are as a leader? That’s the question Bernie Swain, founder and chairman of the well-respected Washington Speakers Bureau, posed to 100 of the many luminaries he represented during his tenure at the bureau—from Madeleine Albright and Tom Brokaw to Colin Powell and Terry Bradshaw. And in a recent HBR article, Successful Leaders Know What Make Them Who They Are