Top performers often remark that when people doubt them, it makes them work harder to prove them wrong. They feel a special responsibility to show doubters that they have made a massive misjudgment. And they’ll work diligently to prove the point. In his memoir, legendary rock singer Roger Daltry, of the band The Who, credits much of his success to his south London headmaster, Mr. Kibblewhite. After expelling him from school for fighting, Kibblewhite told Daltry in no uncertain terms on the way out, “You’ll never make anything of your life.”