full 30 years after original publication, Dianetics: The Modern Science of Mental Health returned to United States’ bestseller lists. With over 16 million copies in circulation in over 17 languages, Dianetics is the world’s all-time, most popular self-help book. In recognition of that fact, Dianetics was the first book in history to receive the Century Award in commemoration of its 100 consecutive weeks on the Publishers Weekly bestseller list.