Had to cancel a tattoo because of picking

I've had dermatillomania for about 4 years, I just picked at my arms so much that I realized I had to cancel my tattoo touch up later today, I couldn't even stop myself around where I was about to be tattooed and ruined things for myself. I've never had anyone in real life with this condition and it makes me feel disgusting. Is anyone else out there struggling a lot right now? Any coping mechanisms? The only thing that works is wearing long sleeves and staying busy.