James Allen 
Man: King Of Mind, Body And Circumstance 

Self-help books aim to help the reader with problems, offering them clear and effective guidance on how obstacles can be passed and solutions found, especially with regard to common issues and day-to-day life. The problem of life consists in learning how to live. It is like the problem of addition or subtraction to the schoolboy. When mastered, all difficulty disappears, and the problem has vanished. All the problems of life, whether they be social, political, or religious, subsist in ignorance and wrong-living. As they are solved in the heart of each individual, they will be solved in the mass of men. Humanity at present is in the painful stage of learning.