James Allen 
As a Man Thinketh [EPUB ebook] 

A long-standing classic, this book is a must read for anyone interested in bettering themselves. The human mind is more powerful than most people know and this book provides readers with a major key in teaching us how to use it properly. Thoughts are what truly control your life, and this can well be considered a kind of owners manual for the mind. Achieve your best self with this book that comprises of techniques that are simple but powerful. And once you master these techniques there is no stopping you.