Psychological studies have recently shown that adversity can be a more powerful motivator than support. Successful people often remember being told that they could not do what they have, in fact, done brilliantly. Stubbornness drove them. Their parents or teachers have told them they will never make any money, or that they will never get a college degree, or that they will never marry and have children. The urge to prove authority wrong has often spurred human beings to unusual success.