Wow. this topic picked back up after I left. Here's a little update on me, not that anyone would care.
I am currently working on my problems on a deeper level. My self injury stemmed from suffering through abuse for many years which has led me to think irrational things, among other problems. I guess my problem with quitting and why I continued to get urges from time to time was I assumed that the cutting was a separate problem and that stopping was as simple as that - stopping. I forgot a very important aspect of recovering from faulty coping mechanisms... they are coping mechanisms and they FILLED A NEED. Quitting without finding something beyond temporary distracters is fruitless. Now that I am exploring the different ways I think that are self damaging, my urges have become less frequent and less intense.
Also I am a psych major and I have been working with a Dialectial behavioral therapy group/ research project. I know that DBT is used for borderline personality, but I have also found that some of the skills taught in the book to be helpful in my own struggles. I also recommended some of the different exersizes to friends and they found them helpful, too. The ones most useful for the self injury urges were those known as distress tolerance or distractors and interpersonal effectiveness which helped heaps with some of my assertiveness issues and asking for help when needed. I highly recommend anyone struggling with this at least give this book a openminded look.
best of luck to you!