As a Man Thinketh by James Allen. It's a small book that you can read in an hour, but it is potent brain fuel. This work inspired Napoleon Hill, who famously wrote The Law of Success and Think and Grow Rich.
Allen's work is a masterpiece, where he masterfully champions the self-determinate man. He tells us, in simple and powerful language, how a man's thoughts determine the course of his life and every aspect of it. He shows us how to conform our minds to the great unwritten laws of nature, as means to obtain whatever we desire in this world.
It is often said here, "Action is all that matters." Categorically untrue. Allen shows us that Thought and Action are inseperable, and you cannot lift one up without lifting up the other. Without a properly developed mind, a man will spin his wheels for all his years on this earth.
