Think and Grow Rich was revised in 1960, and published by Crest Book, Fawcett Publications. The revised edition had a testimonial from W. Clement Stone on the inside front cover page: “More men and women have been motivated to achieve success because of reading Think and Grow Rich than by any other book, written by a living author.” In 1987, Pro Football Hall of Fame quarterback Fran Tarkenton hosted a TV infomercial that sold the 1960 version with an audio cassette version of the book (the audio cassettes contained an introduction and conclusion by Tarkenton and supplemental study guides). In the introduction, Tarkenton stated that he believed Think and Grow Rich to be "the greatest most honored formula for success that has ever been developed."
Mark Hansen has said time has shown that two of the laws/principles are most important: 1) The MasterMind principle/process and 2) "Know very clearly where you want to go."
The book Think and Grow Rich asserts that desire, faith and persistence can propel one to great heights if one can suppress negative thoughts and focus on long-term goals.
Think and Grow Rich is based on Hill's earlier work The Law of Success, said to be the result of more than twenty years of study of many individuals who had amassed personal fortunes.
Hill studied their habits and evolved 16 "laws" to be applied to achieve success. Think and Grow Rich condenses them, providing the reader with 13 principles in the form of a "Philosophy of Achievement".
Think and Grow Rich "steps" listed in the book are:
4. Specialized Knowledge
6. Organized Planning
9. Power of the Master Mind
10. The Mystery of Sex Transmutation (“More men and women have been motivated to achieve success)
11. The Subconscious Mind
12. The Brain
13. The Sixth Sense
14--the Think and Grow Rich content and principles...
There are several courses created from the Think and Grow Rich content and principles.
Earl Nightingale co-created with Napoleon Hill a 30-minute audio summary of the book titled "Think and Grow Rich: Instant Motivator"