About the Author:

Charles F. Haanel was a noted American author and businessman who belonged to the American Scientific League, The Author’s League of America, The American Society of Psychical Research, the St. Louis Humane Society and the St. Louis Chamber of Commerce.

He wrote several books which were published in St. Louis by Psychology Publishing and by his Master Key Institute in New York. Mr. Haanel put into books the ideas and methods he used to gain his success. Besides the "Master Key System," which he wrote in 1912, he also wrote "Mental Chemistry" and "The New Psychology"

By 1933 The Master Key System had sold over 200,000 copies and then seemingly disappeared. The Master Key System is one of the finest studies in self-improvement, mind-stuff, and higher consciousness ever written. Covering everything from how to get wealthy to how to get healthy, Mr. Haanel leaves no stone unturned. With precision, he elucidates on each topic with logic and rigor that not only leaves you feeling good, but also thinking good. The book was banned by the Church in 1933 and has been hidden away for over seventy years!