I'm not going to offer medical advice. I'm sure you already have all that. But here's how I (at least try to) approach life.
If you ain't enjoying it, you're doing it wrong. If gigging stresses you out, don't do it. If you find it enjoyable then it's the best medicine in the world. ( Feel free to replace "gigging" with any other activity)
Life is very short and you only get one shot. Might as well enjoy the ride.