You can just stay on and continue in teaching. I dont think you have much choices outside of the sector. I mean at list you can stay and retire. Dont make any rash decisions due to any reasons you have now.

I have been working in the private sector for close to 5 years and have a masters degree. I have never wanted to work in the public sector. To be very frank there is so much focus on academics and I cant thrive in a culture in public sector. After a while you mind will probably slow down and can't adapt to the face paced corporate world.