A gifted young baseball player played Little League through college ball, hitting an average of nine out of 10 pitches. [But] hitting .900 in the Major League is impossible. The best baseball players […] miss two out of three swings. They sometimes strike out in a crucial moment, drop balls, make bad plays, and disappoint their fans.
The difference […] is that world-class baseball players wake up every game day ready to swing the bat.
Source: John Donahoe: Dump the Myth of the High Achiever | Stanford Graduate School of Business