Leading behavioral researchers have told us that as much as seventy-seven percent of everything we think is negative, counterproductive, and works against us. At the same time, medical researchers have said that as much as seventy-five percent of all illnesses are self-induced. It’s no wonder.
Repetition is a convincing argument.
You will become what you think about most; your success or failure in anything, large or small, will depend on your programming – what you accept from others, and what you say when you talk to yourself. It is no longer a success theory; it is a simple, but powerful, fact. Neither luck nor desire has the slightest thing to do with it. It makes no difference whether we believe it or not. The brain simply believes what you tell it most. And what you tell it about you, it will create. It has no choice.
Taken from the book What to Say When You Talk to Yourself by Shad Helmstetter, Ph.D.