“You have formed, perhaps, the habit of thinking of yourself as a common person, as one of a limited ability, or as being more or less of a failure. Whatever you habitually think yourself to be, that you are. You must form, now, a greater and better habit; you must form a conception of yourself as a being of limitless power, and habitually think that you are that being. It is the habitual, not the periodical thought that decides your destiny. It will avail you nothing to sit apart for a few moments several times a day to affirm that you are great, if during all the balance of the day, while you are about your regular vocation, you think of yourself as not great. No amount of praying or affirmation will make you great if you still habitually regard yourself as being small.
The use of prayer and affirmation is to change your habit of thought. Any act, mental or physical, often repeated, becomes a habit. The purpose of mental exercises is to repeat certain thoughts over and over until the thinking of those thoughts becomes constant and habitual. The thoughts we continually repeat become convictions. What you must do is to repeat the new thought of yourself until it is the only way in which you think of yourself. Habitual thought, and not environment or circumstance, has made you what you are.”
Wallace D. Wattles