I think it will come if you give yourself time.

But in the meantime, I think you can work on the skills you can control, and that will help you getting past the fear of the things you can't. Work on your cornering skills in places with open sight lines and little traffic. Practice "seeing with your whole eyes," i.e., being aware of everything in your peripheral vision rather than fixating on a narrow area. Look through the turns, and look up once you've glanced at the road surface to make sure it's clear of debris.

I've never had a crash even remotely as big as yours, but this kind of thing has been helpful when I've found myself reinforcing rather than getting over past crashes.