I am healing myself.

You don't grow the skin. A cut closes because of a process running underneath that has never once asked your permission, on a timetable it sets for itself.

What is yours is the conditions. Keeping it clean. Not picking at it. Not testing every few hours whether it has healed yet, which is the reliable way to make sure it hasn't.

The same division holds for the rest of it. Sleep, company, honest conversation, time — those are conditions, not cures. Set them up as well as you can, then get out of the way of something that knows what it is doing.