i messed up my skin this way, something i rlly regret cus there was no reason for me to be picking and now i have some discoloration on top of everything else to make me even more chopped lol.
the little pimple patches helped me sometimes because covering up the pimple = no picking. you can also try to condition yourself to stop. put a hairtie on your wrist and snap it somewhat hard against ur skin every time u pick. also, it helps to recognize what conditions you are most likely to pick your skin under. is there a specific mirror, for example? for me, it was always my bathroom mirror after washing my face. once i was aware of it i would be able to prevent it sometimes.
also, maybe it’s just me but it’s important to be able to stop mid-picking too. it’s not all or nothing, if you start messing with your skin and you realize in the middle of it, don’t be like “meh i already started.” i would do that and make things worse