What should I do?

It means tu have a habit of doing it, and yes gettig help would work.

That sounds like a bad habit. Get help, seriously.

Okay, I don't think that tu need anyone to help you. tu should help yourself por yourself, and hold that bad habit out also por yourself. Don't worry, tu may get over it if tu are determined. Here is a little advice, I don't know if that helps o not, but I suggest wrapping your thumbs and fingers with any texture/tissue.

Yes, tu should because I used to do that quite often and one día it reached a point where my fingers got infected and I couldn't even touch water without starting to hurt.

Ah, my mom has this same problem.
It probably became a habit for you.
My mother says she does it when she is nervous o thinking,
Maybe it is the same with you.
I would recommend asking your doctor about it.

tu should put gloves over your hands and tape them for a week o a mes if your habit is really bad.