9. In His Steps: What Would Jesus Do? – 30 Million
By Rev. Charles Monroe Sheldon
Thought to be an average American clergyman, Charles’s fortune changed suddenly in 1896, bringing him great fame and money. His book is based on all the dilemmas and how best we can use the bible in our day-to-day lives with the bid to bringing the whole concept of Christianity to what it means in essence. Charles proposes that we put ourselves in the shoes of Jesus in every decision we make, as this is the only way we can fully exercise our discipline. Selling a total of 30 million, this book is believed to be one of the best selling books up to date.