There was an article here, I think, some time ago where an artist responded to a letter a young guy wrote asking about the conflict between art and income. He said that pretty much all professional artists (musicians, etc.) do art part-time, and that is not even a problem. I think he said it helps focus the art, but I do not actually remember.

Also, at some point you might find that you basically will have what need you for retirement (assuming future investment performance matches past performance, etc.) but not enough to retire now. Half-retiring is an option: work enough to pay expenses but you don't need to save, you just need to not spend the savings.

(Maybe this https://news.ycombinator.com/item?id=38507908 is the posting? The posted link loads a blank page for me, though, so I can't tell.)