[Serious] People age 18-40s, who do not work or go to school, what do you do in your daily life? How do you sustain it?

Early 30s, I've never worked a 'proper' job. I'm a musician and do gigs but as a musician life is intrinsically feast-or-famine and whether or not I have any sustaining gigs at any given time can be unpredictable and unreliable(As well as, frustratingly random seeming at times). But I'm able to sustain my life because of an inheritance, prudent investing and some dumb luck. As a result I have a pretty decent amount of money(some tied up in assets, some invested, some in savings and some in my checking account) that, if I live frugally, can sustain me more or less indefinitely.

It's a mixed bag. On the one hand. I really can't complain. I've been very fortunate. I spend my time keeping my abilities sharp and well practiced both practical and theoretical, going to the gym regularly, spending time outdoors, cooking and maintaining my home and reading and learning about things. On occasion I still play some video games but not really habitually. All of that is fine and good and gratifying in its own way but alongside it I perpetually feel as though I'm living on borrowed time and that sooner or later my situation will change and I'll be completely inadequately equipped to handle it. Similarly, I sometimes feel like I'm squandering time even as I try to stay healthy overall where I'm constantly asking myself "Why am I not (insert thing I could be doing instead of whatever) right now?" or "There are so many people out there who would love to have the time/resources you have, what are you even doing with them?" and other things like that.

Lastly, as a musician, I've spent decades honing my craft but the value of being a musician has plummeted dramatically and there's little in the way of a conventional/traditional 'path' to stable income from this skill set. Every good gig I've gotten has mostly been about relationships and dumb luck/timing while near everything I've tried to force it has backfired or failed. Again, can't complain, because I can still get on. But I also at times feel like I'm just sort of cheating and it'll catch up to me eventually.

/r/AskReddit Thread