This is the only way to cure it. Would you trust someone who’s never been? Now listen: you need to get yourself a rope. Coarse preferably. Tie it as close as you can to the wound. Make it tight enough to starve it of its origin. Isolate the damage. Let the abrasion as you move distract its cause for you. Let it twist and spark and scrape away the rust into a clean flame. Take the flame and douse your fingertips as deep as you can, then deeper every time. Work your way up to the knuckle. If it scalds, good. Let it erase the infected nest from the forefront of your mind. The problem is self-constructed; unnatural, not organic on its own. It breeds when you doubt. Don’t give it that advantage.
Now do this for every time you feel it reclaim some length of you. Do it until you run out of rope, or until every laceration is covered likewise. You must become raw like the rope itself. There is no room for mercy (not if you want to heal). If you hesitate, the weed will grow