Citadel Head Ken Griffin Says His Career's 'Wake Up Moment' Proved Everyone's 'Always Selling:' And If You Don't Like It, 'Get Over It'

Citadel CEO Ken Griffin says the secret to building any enterprise boils down to one blunt commandment: learn to sell. What Happened: Speaking to MBA candidates at Stanford University's Graduate School of Business, the billionaire hedge-fund founder recalled visiting an early backer and spotting a…