When Napoleon Hill published this book in 1967, it had been sixty years since he began his investigation into the principles that govern success. During that time he had collaborated with 500 of America's most successful industrialists, businessmen, scientists, inventors, entrepreneurs, and public figures. He had learned their secrets of success, he had written a number of bestsellers explaining his findings, and he had gained world recognition as an educator, motivational speaker, and one of the most influential voices in America.

In those sixty years Napoleon Hill not only got to see his work vindicated but he was also fortunate to have such a long career that he had the rare luxury of reconsidering, revising, updating, and improving many of the theories that were the basis of his success and influence. Grow Rich! With Peace of Mind was written by Hill as a commentary on his theories and techniques that had had such a profound impact on American culture and business, and it was an opportunity to explain the evolution of his philosophy and his most recent thinking on the subject of success.

As with all of his books, in Grow Rich! With Peace of Mind Hill explains each of the seventeen principles of success, but here he also offers his analysis of how his original conception of each has stood the test of time. Although Hill finds no reason to refute any of his original principles, he does modify some, and he introduces a new theory that extends itself into all of the principles: the overriding importance of knowing your own mind and living your own life on your own terms. That thought—the importance of succeeding at being yourself—is the key to Hill's revised theories and it provides a broader definition of success.

“All of my books show in many ways that there is more to life than making money. This book proves the point far more fully than I was able to prove years ago—and shows, too, that peace of mind in itself is a mighty force in helping you to make money.”

Napoleon Hill never shied away from the fact that, for many, success will always be measured in monetary terms. And he does not radically change his position with this book. This latest version of Napoleon Hill’s philosophy of personal achievement still offers a blueprint for success, and Hill still leaves it to each individual to choose what they consider success to be. However, in this book he makes sure that the reader also knows the value of peace of mind.