What do you like?
I'm just asking b/c people often suggest, for example, that someone should be a pharma salesperson if they quit residency. For me, personally, I know I'd suck at sales b/c I hate trying to sell stuff to people...I even sucked at selling girl scout cookies.
I could see myself teaching or doing physical therapy, however, had I not pursued medicine.
As a stopgap, you could probably get a job doing some type of teaching or tutoring, if you can't think of what else to do. If you have research experience, could probably get a job in a lab or something.
If you just want a less stressful job, could go into something more in the business realm, but behind the scenes or where you might be able to make your own schedule more. ? accounting or computer stuff.
Are you sure you don't want to switch specialties, into something like pathology or preventive medicine? If you don't like medicine in general, that's no good, but if you just got ground down by being a surgery, IM or fp intern, you might feel different in another specialty.
Although medicine is more stressful, there is going to be stress in any job. Some of your stress problem may follow you whatever you do, wherever you go, if it's just your personality. I stress out a lot too, but I'm trying to find better ways to deal with it than brooding and worrying...it is an ongoing process.