Now considered a classic self-help book, As a Man Thinketh's (by James Allen) underlying premise is that noble thoughts make a noble person, lowly thoughts make a miserable person. In short: you are what you think.
Listening to this, in an active way… with your problems and goals in mind, you may discover that you are “the master gardener” of your own soul, the “director” of your life. And you may be inspired to take charge of the thoughts that shape your being. I have listened many times, while exercising and with different problems or goals in mind, and have almost always found a helpful insight. -mikegreer