Most self-help books are written by people who haven't "made it" themselves, yet consider themselves qualified to write about it (though, in this process they do become rich).

Probably the most overlooked subject in my education was ethics. Moral philosophers have already pondered about every possible choice one is bound to make in his life. Hence i find "Fundamentals of ethics", which summarizes all ethical theories to be the one book that helped me make moral choices in a more thoughtful and systematic manner.

http://www.amazon.com/Fundamentals-Ethics-Russ-Shafer-Landau...