Melody Beattie

 Melody Beattie is the author of Codependent No More, published in 1987 by the Hazelden Foundation. The book was successful and influential within the self-help movement, selling over eight million copies and introducing the word codependent to the general public.

Following the success of Codependent No More, Beattie authored over a dozen other books, including Beyond Codependency and The Language of Letting Go. Her most recent book is Make Miracles in Forty Days: Turning What You Have into What You Want, published in 2010. Several of her books have been published in other languages.