Napoleon Hill's work has touched the lives of millions of people through his lectures, teachings, and prolific writings. His internationally known books Think and Grow Rich and The Law of Success have become the standards of motivational literature against which all others are measured.
The Positive-State-of-Mind principle presents the means by which the entire Science of Success philosophy can best be assimilated and put to practical use. You cannot get the most out of the other sixteen principles without understanding and applying this one first. You should study it thoroughly to understand its meaning.