New Book by International Bestselling Author Rhonda Byrne. The Greatest Secret, the long-awaited major work by Rhonda Byrne, lays out the next quantum leap in a journey that will take the reader beyond the material world and into the spiritual realm, where all possibilities exist. The book reflects Rhonda's own journey, and shares the most direct way out for those experiencing hardship and the path to end pain and suffering endured by so many, and shines a light on a future without anxiety or fear. Filled with accessible practices that can be immediately put to use and profound revelations that take the reader on an incomparable journey, Rhonda's discovery is reinforced throughout by the revelatory words of sages from around the world, past and present.