Retrosimplicity - YES, you make sense. I feel like I need to start thinking more like you. Feeling like you're in control of it (at least for me) is important. And remembering it will pass is great too. :)
For me, I just try to keep my hands busy until the urge passes. I write, paint, draw, and the biggest one lately, I've gotten really into making handmade jewelry. I've made so much that I've started selling it online, and I find that really helps me...it makes me feel so much better about myself that I can manage to run a small business online, and when I want to self-harm, I remind myself of that, and make more jewelry, and it helps me feel better....productive. It's 5:30am and I have noooo idea if I'm making any sense at all.
But yeah, basically, I just keep my hands busy.