i used a book called the scarred soul. i dont know if it was particular to cutting as the title would imply, it referred to it as self inflicted violence which hitting yourself would be. i liked it in that through most of the book it did not push you to give up your violence which i wasnt really prepared to do. but it helped me to understand why i was hurting myself. you read a chapter and then answer questions. it isnt till near the end of the book that you make a committment to stop. i could not do that. but still, i did not cut for five years after that. then i cut like two times when i had a complete breakdown and was massively suicidal. and it has been almost eight years now since i have harmed myself. so it think the book really worked. you can get it pretty cheap, around ten bucks, cheaper used, on amazon. take care.