" Your automatic mechanism, or what the Freudians call the “unconscious,” is absolutely impersonal. It operates as a machine and has no “will” of its own. It always tries to react appropriately to your current beliefs and interpretations concerning environment. It always seeks to give you appropriate feelings, and to accomplish the goals that you consciously determine. It works only on the data that you feed it in the form of ideas, beliefs, interpretations, opinions. It is conscious thinking that is the “control knob” of your unconscious machine. It was by conscious thought, though perhaps irrational and unrealistic, that the unconscious machine developed its negative and inappropriate reaction patterns, and it is by conscious rational thought that the automatic reaction patterns can be changed. "

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