At least I can recognize various self-destructive urges for what they are and decide not to give in to them. The last one I had, I gave into, but that was the reversible kind. The one just now is not reversible (although I could recreate what I was thinking about destorying. It would be a hassle, and I probably wouldn't ever find the motivation to recreate it, but it would be possible to do), so I decided to not do it, figuring that my mood would change and I might regret having been destructive.
This kind of paying attention to my processing isn't something I've always done. It pleases me that I am finding myself doing it now.