As A Man Thinketh is a self-help classic outlining that the key to mastering life is harnessing the power of thought, helping you to cultivate a philosophy and attitude of positivity and success.

James Allen was a pioneer of the self-help movement, and published his great philosophical essay, As A Man Thinketh, in 1903.

Allen kept the book simple, both in length and language, so that everyone could understand how power over one's thoughts can give power over one's life.