How to stop picking at my skin, nails, ingrown hairs?

I’ve always been a picker. Idk if it’s a nervous habit or what, but I can’t seem to stop. I am constantly picking at something and it makes my skin and nails look terrible.

I’ve tried other things to keep my hands busy like stress balls, fidget toys, putty…. Etc. It helps for a bit but I never stick with it and always go back to picking something on my body.

Sometimes I will literally spend hours with a flashlight and tweezers picking at hairs on my legs or face. I feel like I’m crazy or something and am just looking for any advice on how to stop doing this?