By Napoleon Hill
1) I know that I have the ability to achieve the object of my definite purpose in life; therefore, I demand of myself persistent, continuous action toward its attainment, and I here and now promise to render such action.
2) I realize the dominating thoughts of my mind will eventually reproduce themselves in outward, physical action, and gradually transform themselves into physical reality; therefore, I will concentrate my thoughts for thirty minutes daily, upon the task of thinking of the person I intend to become, thereby creating in my mind a clear mental picture.
3) I know through the principle of autosuggestion, any desire that I persistently hold in my mind will eventually seek expression through some practical means of attaining the object back of it; therefore, I will devote ten minutes daily to demanding of myself the development of self-confidence.
4) I have clearly written down a description of my definite chief aim in life, and I will never stop trying, until I shall have developed sufficient self-confidence for its attainment.
5) I fully realize that no wealth or position can long endure, unless built upon truth and justice; therefore, I will engage in no transaction which does not benefit all whom it affects. I will succeed by attracting to myself the forces I wish to use, and the cooperation of other people. I will induce others to serve me, because of my willingness to serve others. I will eliminate hatred, envy, jealousy, selfishness, and cynicism, by developing love for all humanity, because I know that a negative attitude toward others can never bring me success. I will cause others to believe in me, because I will believe in them, and in myself. I will sign my name to this formula, commit it to memory, and repeat it aloud once a day, with full faith that it will gradually influence my thoughts and actions so that I will become a self-reliant, and successful person.
Source: Think and Grow Rich Chapter 3: Faith