One of Napoleon Hill's most famous writings is his Self-Confidence Formula. Everyone who is interested in living an above average life should memorize it. It is found in his first book, Law of Success and in Think and Grow Rich.
The Law of Success (originally The Law of Success in 16 Lessons) is the title of Napoleon Hill's first book set, published initially in 1928 as an multi-volume correspondence course and later more compact formats in recent years. The work was originally commissioned at the request of Andrew Carnegie at the conclusion of a multi-day interview with Hill, and was based upon interviews of over 100 American millionaires across nearly 20 years, including such self-made industrial giants as Henry Ford, J. P. Morgan, John D. Rockefeller, Alexander Graham Bell, and Thomas Edison.
The original edition featured the eponymous 16 lessons, with the updated 21st-Century Edition featuring an additional 17th lesson drawn from later notes and lecture materials.
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.
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 of that person.
I know through the principle of auto-suggestion, 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.
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.
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.