"In Economics in One Lesson, Henry Hazlitt presented simple and memorable rules for applying economics to understanding how the world works. It would end up as one of the bestselling economics books of all time. It continues to be an invaluable teaching tool for anyone just discovering economic logic.
Twenty-four years earlier, however, he had written a book nearly as compelling. It was popular at the time, but today hardly anyone knows about it. It too was influenced by economic thinking. This was the dawn of the roaring twenties, just as alcohol prohibition was imposed on the country, expansionary credit was shortening time horizons, and Freudian psychoanalysis was becoming the popular rage. The book was on psychology, a kind of self-help manual called The Way to Will Power (1922). This book did for the cause of personal freedom and self-mastery what his most famous book did for economics."
(Via.) The Freeman : Foundation for Economic Education <——Read more of the article by clicking this link