" Remember that both behavior and feeling spring from belief. To root out the belief that is responsible for your feeling and behavior—ask yourself, “Why?” Is there some task that you would like to do, some channel in which you would like to express yourself, but you hang back feeling that “I can’t”? Ask yourself, “Why?” “Why do I believe that I can’t?” Then ask yourself, “Is this belief based on an actual fact or on an assumption—or a false conclusion?” Then ask yourself the questions: 1. Is there any rational reason for such a belief? 2. Could it be that I am mistaken in this belief? 3. Would I come to the same conclusion about some other person in a similar situation? 4. Why should I continue to act and feel as if this were true if there is no good reason to believe it? "

― Maxwell Maltz , Psycho-Cybernetics, A New Way to Get More Living Out of Life