Not sure if this went on here yet, but I find that drawing on my arm over my scars helps a lot. It makes my arm look pretty and I wouldn't want to hurt something pretty... It also distracts me and covers up the reminders of previous SI, which helps.

I also find that when I get the urge I freeze. Cuz I know that if I let myself move then I'm gonna cut. Tonight I got it and froze in a really uncomfortable position. And then I called my friend and asked her to talk to me while I got up and got ready for bed... And didn't hang up till I was in bed in the dark. It worked pretty well! I also had planned what I was going to do once I stood up. No room for other stuff