Think and Grow Rich has earned itself The reputation of being considered a textbook for actionable techniques that can help one get better at doing anything, not just by rich and wealthy, but also by people doing wonderful work in their respective fields. There are hundreds and thousands of successful people in the world who can vouch for the contents of this book. At the time of authors death, about 20 million copies had already been sold. Numerous revisions have been made in the book, from time to time, to make the book more readable and comprehensible to the readers. The book details out the most fundamental questions that once bothered the author, Napoleon Hill. The author once set out on a personal quest to find out what really made some people so successful. Why is it that some people manage to remain healthy, happy and financially independent, all at the same time? Why, after all, do some end up being called as lucky? The answers, no wonder, had to be no less than revelations. For more than a decade, the author interviewed some of the wealthiest and most successful people in the world.