“You will become large as your controlling desire; or as great as your dominant aspiration.” (James Allen) In more than 3300 studies of leaders conducted over the years, there is a special quality that stands out, one quality that all great leaders have in common. It is the quality of vision. Leaders have a vision. Non-leaders do not. Earlier I said that the most important discovery in all of human history is that “You become what you think about — most of the time.” What is it then those leaders think about, most of the time? And the answer is that leaders think about the future and where they are going, and what they can do to get there. Non-leaders, on the other hand, think about the present, and the pleasures and problems of the moment. They think and worry about the past, and what has happened that cannot be changed.