I would agree that the fun/work line is different for everyone, but I would also submit that a really low bar can also lead to an interesting hobby life over the long term.
I would consider that I give up on stuff pretty early when it becomes "not fun [1]." I'm in my 50's and I've been doing it for a long time. Since I'm always obsessed with something and each time I try something I get at least a little better, I have built up a pretty decent background in a lot of different areas and the amount I can accomplish before something becomes "not fun" gets to be more and more. I like to say I have a Metahobby: I collect hobbies.
I know this isn't a viable solution for most, but at least it's an alternative to feeling crappy about not finishing stuff. Also this:https://youtu.be/GHrmKL2XKcE
[1] For hobby projects. In my career, I know it's work, someone's paying me.
I would consider that I give up on stuff pretty early when it becomes "not fun [1]." I'm in my 50's and I've been doing it for a long time. Since I'm always obsessed with something and each time I try something I get at least a little better, I have built up a pretty decent background in a lot of different areas and the amount I can accomplish before something becomes "not fun" gets to be more and more. I like to say I have a Metahobby: I collect hobbies.
I know this isn't a viable solution for most, but at least it's an alternative to feeling crappy about not finishing stuff. Also this:https://youtu.be/GHrmKL2XKcE
[1] For hobby projects. In my career, I know it's work, someone's paying me.