Persist somehow until you've banked enough pto and get the hell away from wherever you are. Go on a roadtrip or camping or a hike. I'm not a doctor but consider using some of nature's natural medicines. (Not that a doctor would ever advise you to do that of course)

Perhaps you may be depressed, seek counseling and see if that helps.

It can be a rough world out there. Look at what you have though, a ton of valuable experience that you can apply towards the right opportunity when the time is right.

Hang in there, time changes if nothing else, and that may be all you need.