What should I do?

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

Yes, 你 should because I used to do that quite often and one 日 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 或者 thinking,
Maybe it is the same with you.
I would recommend asking your doctor about it.

你 should put gloves over your hands and tape them for a week 或者 a 月 if your habit is really bad.