Tristan Walker's Challenge: 'How Can I Be the Best CEO I Can Be?'He's a tech darling turned high-profile spokesman for diversity in Silicon Valley. But to truly succeed, he's rethinking everything.

"I recognize that in my place as a black man,"Tristan Walker says, "everything I do is judged two times in either direction. Two times positively, or two times negatively."

The 40 or so students sitting before him nod.They're assembled here at the Stanford Graduate School of Business for a class called Entrepreneurship from Diverse Perspectives, where female and minorityentrepreneursand investors are invited to speak. The hope is to cultivate an appreciation for the value ofdiversityamong the country's nextbusiness leaders.