The Law of Success in Sixteen Lessons includes what Hill describes as the True Philosophy upon which all Personal Success is Built. From Self Confidence to Imagination and all aspects of personality and habits in between Hill spells out the steps to success.

Napoleon Hill was an American author who was one of the earliest producers of the modern genre of personal-success literature. His most famous work, Think and Grow Rich, is one of the best-selling books of all time. Hill's works examined the power of personal beliefs, and the role they play in personal success. He became the adviser to President Franklin D. Roosevelt from 1933-36. "What the mind of man can conceive and believe, it can achieve" is one of Hill's hallmark expressions. How achievement actually occurs, and a formula for it that puts success in reach for the average person, were the focal points of Hill's books.

The turning point in the writing career of Napoleon Hill is considered to have occurred in 1908 with his assignment, as part of a series of articles about famous men, to interview the industrialist Andrew Carnegie, one of the most powerful men in the world. Hill discovered that Carnegie believed that the process of success could be elaborated in a simple formula that could be duplicated by the average person. Impressed with Hill, Carnegie asked him if he was up to the task of putting together this information with only reimbursement for out-of-pocket expenses to interview or analyze over 500 successful men and women, many of them millionaires, in order to discover and publish this formula for success.

As part of his research, Hill interviewed many of the most famous people of the time, including Thomas Edison, Alexander Graham Bell, George Eastman, Henry Ford, Elmer Gates, John D. Rockefeller, Sr., Charles M. Schwab, F.W. Woolworth, William Wrigley Jr., John Wanamaker, William Jennings Bryan, Joseph Stalin, Theodore Roosevelt, William H. Taft, Woodrow Wilson, and Jennings Randolph. Hill was also an advisor to two presidents of the United States of America, Woodrow Wilson and Franklin Delano Roosevelt.

As a result of Hill's studies via Carnegie's introductions, the Philosophy of Achievement was offered as a formula for rags-to-riches success by Hill and Carnegie, published initially in 1928 as a study course called The Law of Success. ---From Wikipedia