Help with Coping Mechanisms: How to Stop Habits That Cause Harm?

I can't tell you how to stop, but I can tell you I pick as well. I've made myself bleed without even being aware. Best I can do is keep my skin clean and exfoliated. For me, that makes it less likely to have something or somewhere I'd pick.

something that was helpful for me was to start with being aware that it was even happening! i found that when i was picking my skin i was doing it without even thinking. being aware that it’s happening and then brainstorming another thing to fidget with (like a stress ball, pen to click, etc) or a way to self-soothe (meditation, journaling)

I use to do that but what helped for me is that I did things that make me calm and happy. I recommend to do something that puts your mind off of that. Like whatever makes you happy you should do or maybe listen to some music if that's what you like