I don't cut, but I have friends who do. Isn't it a little easier said than done? How do you stop yourself? I may not cut, but PTSD has lead me to other self-damaging behaviors..
I have never cut, but did self-harm, for a few years.
Yes, I found it was nearly impossible not to- unless you can equate (to yourself) at least a single moment wherein you can have enough empathy looking back at yourself during the trauma(s) -( the age you were, what you did in response, or didn't do, etc), and have the same 'empathy' towards 'yourself' ('then', looking back, except you're in the 'now') as you would have (and do) for even strangers.
I read that "Women who harm themselves.." book, and remember crying for the 1st time about one trauma, and the resulting behaviour, for the first time (it took about -idk- 8 or 10 years). I only recall it was a 'novel' idea, to me- thought I'd never treat anyone that age with the lack of 'sympathy' I had thought of myself.
I would suspect there is a continuum of self-harming and reckless/ life-threatening (or 'pain inflicting') behaviours- I don't know the answer there, except for common sense and seperating the 'intent' of the behaviour, or complicating factors (is it to 'take the pain away', or (try to) 'cope', or depression, or SI, or panic (stress), or self-hatred, or physical illness (lack of energy, not eating), etc).
If nothing else they're probably at least ~related: trying one (bad) 'coping' method, after another, to get through.
JMHO and experience, of course.