Napoleon Hill’s greatest success, his motivational book “Think and Grow Rich,” is often cited as the publication that ignited the self-help industry. Though the details of Hill’s career are often debated, the undisputed reality was that he persisted with his writing through the ups and downs of a career that spanned the Great Depression and World War II. In his 87 years, he wrote 11 books, many of which have been translated and republished countless times. In his books, his words live on to remind us that failure is only the end of the story if we give up, and great success lies in persevering beyond even the most discouraging setbacks.