Picking skin on fingers

Hi there,

I don't have a problem with picking skin on my face or body, so I am not sure if I fit in the typical excoriation model. My issue is that I have been picking the skin on my fingers since I was about 10-11. I am 30 now and have managed to stop picking at my fingers. However I haven't been able to stop picking at my thumbs. The skin usually grows back but I end up picking after 1 week off whenever I am anxious or nervous. The symptoms amplify if I have been consuming alcohol or smoking weed, not that I abuse the two in any way. I drink very rarely (once per week) and smoke at the most once every 2 weeks or less. I

Excoriation is not something that is absolutely ruining my life, but I would like to stop at some point If I am 50 years of age and still picking, I am afraid I will be very disappointed in myself for not being able to overcome it.

Thank you for listening.