My advice is to go back to college. It's never too late. I never got my degree and I recently decided to go back to school even though I have major test anxiety. Have you tried counseling? I'm sure the college would have counsellors on campus as well. My counselor has helped me a lot and given me tools to help reduce my anxiety.

I'm so excited to be going back to college and I am very motivated to get a degree to prove to myself that I can do it. Visualize yourself succeeding and earning that diploma. That has been very helpful.