LeadershipOff the WallW. Clement Stone began as a shoeshine boy and became a multimillionaire. He credits his success to three words: Do It Now. He required everyone who worked for him to write those words on index cards and post them in their work area.Find out what these leaders have posted on their office wall.Donald Trump, Bill Gates, Michael Dell, Louis Gerstner Jr., Ursula Burns (CEO Xerox), Kevin Sharer (CEO AMGEN), Tony Hsieh (CEO Zappos) President Ronald Reagan, Rudy Giuliani, Sara Palin, and many others.