I'm sad to admit that I can relate to your uncertainty what to do professionally the rest of your life. I'm not knowing that for myself either. A new qualification (as a anaesthetic nurse for example) requires at least 3 years of training and most free places are already taken. (Even those for next spring.) And after all, I'm not young anymore.

I found out about Brian May's late PhD (30+ years after he began dealing with the topic).

Life seems to work better for some people.