When I first started, I thought it wouldn't become a problem and I'd be able to stop if I wanted to because it honestly doesn't even feel that good or hurt that much, at least not with the tools I have available.
I ended up being wrong, though. I suppose it's habit forming or was providing me something good even if I didn't realize it, because I've also been doing it nearly daily now, even on nights where I'm not particularly distressed.
If you find something that helps you stop, I'd like to hear about it. I'm not particularly worried about my body's safety or anything, and I don't mind the look of the scars, but I can't have them showing in public and I live somewhere very hot so it's getting annoying.