That was my focus too, finding a way to have more time to myself on my own terms.
I usually suggest teaching English abroad if you're a native speaker.
You could chant primary colors at kindergarteners online line for a maximum of 20 hours per week, or in person for a maximum of 10 hours per week and clear $400 easy.
You could also teach 20 hours a week for 6 months and then live off the savings for years.
That's minimum wage 400 bucks a week, we'll say you spent $400 for monthly expenses wherever you are, tje other 3 weeks are all your necessary expenses for 3 months without working, or one month partying.
Want to boost your pay? Take an internationally accredited tefl course online for a couple days, pdf tests, that costs 40 bucks and you'll instantly be paid more than the minimum wage($20 an hour's the usual minimum) they pay teachers at any job you apply for.
If having your own time is really the most important thing to you, as it is to me, the process is very simple, especially for native English speakers.
You don't need to do it the rest of your life either.
Work part-time for a few months and then take a year off to figure out If you're doing what you want to be doing. At least you won't be wasting time and money figuring it out.
Do you want to keep vacationing? Then you have already done it and have experience with that.
The next year you vacation it'll be even cheaper and easier than it was the first time.
Do you want to pursue a hobby professionally? You have time to set that up. Or you can pursue the hobby for fun, indefinitely.