I'm so sorry you're struggling with this. I've dealt with skin picking for so very long, and I know how hard it is to stop.

For me, the only thing that has really helped is actually talking about it with my therapist. Once I was able to talk about it with my therapist, and get over some of the shame and talk to someone who understood what I was going through and didn't judge me, then I was able to do other things to lessen the picking. I haven't stopped yet, but it's lessening. With my therapist's help, I've found that employing skills from DBT has helped the most in getting my skin picking under control. I fill out a diary card each week, and we talk about my triggers and how I handled them. I practice mindfulness whenever I feel the urge to pick. Being aware of my emotions and finding other ways to cope with them has also helped.