Random question

K8
Question about my hands/nails.
For as long as I can remember I've bit my nails and picked at the skin around my nails. After having braces on my teeth I don't bite my nails now but annoyingly I still pick around the nails. I do it because it's always peeling (from the picking) and it looks horrible so how can I stop thing enough so it all grows back without me needing to pick off the flaking skin?!