I’ve bitten back the skin on my thumb too much and it won’t heal?

Hello everyone! So let me start off with saying that i have bad anxiety, and even worse coping mechanisms. i know its gross, but ever since i stopped biting my nails about a year and a half ago, i have subconsciously began biting the skin around my nails. i have unfortunately bitten the skin around my right thumb so much, that now it is inflamed and part of the skin now seems almost a bit translucent. it hurts pretty bad when i touch it and is hasn't healed any in the past month. ive tried triple b cream and intense cuticle cream, but im not sure what to do at this point. any advise or knowledge as to what exactly ive done to my thumb would be appreciated!