by Napoleon Hill and W. Clement Stone
ISBN: 0-671-74322-8
The core message of Success Through a Positive Mental Attitude is that you have what the authors refer to as an "invisible talisman" which you can use for either positive or negative results. The talisman is your own mind, and you are the one who determines whether you will "flip" the talisman to the side of PMA (a Positive Mental Attitude) or NMA (a Negative Mental Attitude.) Since you determine which side of the talisman you will use, you are the most important person in the world.
The book lists and explains 17 Success Principles:
Throughout the book, each of the principles is explained in detail, and the reader is encouraged to put them into practice.