This sounds like something I've come to know all too well, ID. Take a look at this book and see if it can help. (not a self help book, more of a confession/diary). Im not a doc. So take this as another random thought. Even if its not you, its a compelling story. http://www.amazon.com/gp/product/1592850995/qid=1134237957/sr=8-13/ref=pd_bbs_13/002-4951530-3800842?n=507846&s=books&v=glance
How did cutting become to popular? I'm not trivializing your problems or whatever drives you to cut yourself But, cutting seems to have caught on, so many people do it and I can't help but wonder if some just resort to it because its the "thing" to do