What exactly do you mean by a success story? Do you mean successfully beating it? If you do, I suggest that you tell your friend to look into Demi Lovato. She has been such a big help for me with getting over many issues. Her story is so powerful, and she is such and inspiration to many people. She had bulimia for almost 6 years, and she beat it. She is now almost 2 yrs clean from any type of Eating Disorder and self harm