i used to have the sameee exact problem
you just gotta break the habit, it’s rlly difficult. this stuff is just what helped me specifically, it might not help that much if ur habits are a lot different than mine
identify when ur most likely to do it, and use that to ur advantage to try to avoid those situations. there were two mirrors at my house i’d always pick my skin in front of specifically, and even just being aware that i had a tendency to do it there made me more self-aware and able to stop myself more often. i’d keep the light off in the room that one of them was in so i couldn’t see as well and be tempted to pick my skin
avoid getting super close to mirrors so you don’t see your skin texture as well, which helps avoid triggering the skin picking. also avoid running ur fingers around ur skin feeling for bumps or anything (+it’s better for your skin to avoid touching it.)
and one of the most important things is to stop as soon as you realize you’re picking. even if you already made a gash around a forming pimple and you still haven’t popped it, just stop instead of continuing bc of a “well i already fucked up my skin” mentality