You could be a plumber or you could get a job as police officer in Tacoma, WA. Those are Sky's favorites. My favorite is pharmasuitical sales. Any degree will do and the potential is there for a high income. Ask TonyM, he's the expert is the medical field here at "leaving the career".
Personally, if I had it to do over, I'd change very little. But getting into the biz mid-career and expecting it to pay better than your last job right away probably isn't gonna happen. You need to get into flying because you love flying and are willing to make the sacrifice to pursue it. It's not for everybody. Best wishes as you figure out which way to go....