I hope you're doing better soon, chelsea:) This is way beyond the scope of my knowledge but here are some thoughts anyway. Yes, do all the things that people have suggested here like meditation, etc., but know that they can't fix brain chemical issues per se; they can only help manage and alleviate symptoms and I do know what I'm talking about here. If you can see a certified alternative Dr. whose into holistic​ treatments. Also someone like Gabor Matte in Vancouver. Research things like micro-dosing as they are proved to help heal and integrate brain functioning but do it under alternative medical supervision.
Go on a living food diet high in things like sprouts, vegetables, living alive food. Keep exercising as much as possible and stay off recreational substances like booze while you deal with this.
Hang in there!