Dr. Orison Swett Marden (1848-1924) was an American author of inspirational books. He wrote primarily on the subject of being successful and founded "e;SUCCESS"e; magazine in 1897. Marden's books deal with attaining a fruitful and well-rounded life, with many of his ideas being based on the New Thought movement. This particular volume looks at the subject of cheerfulness and its power to enhance o...