Navigating a midlife crisis

Distract yourself from the hellscape and help me decide what to do with my life. I'm cruising into my mid 40s. I'm a parent to a teenager who is about to transition into public school after 7 years of homeschool/unschool - meaning I have roughly a 7 year employment gap. I've owned a business (salon), managed a bakery, worked many years in restaurants (foh and boh), taught aerials, and don't have a degree. My spouse has a master's and a good enough job so I'm primarily earning money under the table and it just helps pad our life but doesn't make or break us.

I live in the US. There is a major university here in our city, plus a few smaller colleges and universities. I can't decide if I should not go to school at all, or if I should go to school for something I'd enjoy doing but would be difficult to turn into employment (looking at you, visual art degree), or go to school for something that would make a fairly high salary (nursing or adjacent, likely), or if I should just go for something really practical and quick (welding, CAD/drafting, woodworking). I theoretically still have 20 years of working life ahead of me, but in that time I'll also have a harder time standing for long hours, which is the only work I've ever done. Something new has to happen either way. Additionally, I'd love if this made it easier for us to move out of the country (Canadian spouse, so likely Canada).

I've come to this sub with this question because I'm not interested in people obsessed with their investment portfolio giving me advice on this. What would you do? Do I get a degree and a job that would make good money so we can retire comfortably sooner? Do I get a skill like woodworking that I would enjoy and could be something I do for the rest of my life? Or do I go to school for art because it would bring me joy (and I could of course find some kind of job using that degree)? Or do I not go to school and try and open one of my zillions of business ideas?

There's no right or wrong answers. I appreciate you reading! And if by some crazy chance you read this and said, hey, I know who that is! Please let me make us a pot of tea and we talk about it in person.