"21 Years Gone: The Autobiography" by Jack Osbourne is a gripping self-help book that delves into the author's journey with substance abuse and addiction. Published in 2006 by Macmillan The Limited, this hardcover book features 224 pages of English language content illustrated by the author himself. The book covers topics such as Jack Osbourne's rise to fame, his struggle with drugs and alcohol, and his personal journey towards recovery. A must-read for those seeking inspiration and guidance in their own battles with addiction.