" The important thing for you to remember is that it does not matter in the least how you got the idea or where it came from. You may never have met a professional hypnotist. You may never have been formally hypnotized. But if you have accepted an idea - from yourself, your teachers, your parents, friends, advertisements, from any other source - and further, if you are firmly convinced that idea is true, it has the same power over you as the hypnotist's words have over the hypnotized subject. "

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