This works if you're interested in running a business, but what well paying work doesn't require a degree or some kind of formal training certification?
First you assume that being "interested" in the work is a requirement. I'm guessing 90% of people are doing work that doesn't interest them. But assuming that it's a requirement for you the question becomes, what are you interested in?
Second you want well-paying work. I understand. Programmers got well paid. They lived above the standard of most. It's not surprising you'd want to keep that. But "well paying" is a spectrum. It depends on your life-style, location, eating habits and so on.
And finally, lots and lots of jobs don't require a formal certification. Or one that isn't trivial to get. Ask the people you see everyday (including the software programmers, hardware designers, receptionists, assistants, book keepers, marketing and advertising people, sales, support, your vehicle mechanic and so on.) I suspect if you asked every dingle person you met in a day the ones that actually had this requirement would be a rounding error.