Left to my own devices I'm pretty sure I'd work a variable number of hours a week, going as high as 80, and probably averaging in the neighborhood of 60.
The tricky part for me is that breaking 25ish actually-productive hours a week isn't compatible with a steady 40ish hour a week job where I'm doing mostly the same thing every week.
Ideally I'd spend 40hrs studying math one week, 80hrs developing a game next week, 30hrs landscaping/gardening + 30hrs building furniture the next, 50 hours writing fiction the next, et c. It's doing more-or-less the same work every week, whether I'm in the mood for it or not, that places such a low upper bound on my total productivity.
The tricky part for me is that breaking 25ish actually-productive hours a week isn't compatible with a steady 40ish hour a week job where I'm doing mostly the same thing every week.
Ideally I'd spend 40hrs studying math one week, 80hrs developing a game next week, 30hrs landscaping/gardening + 30hrs building furniture the next, 50 hours writing fiction the next, et c. It's doing more-or-less the same work every week, whether I'm in the mood for it or not, that places such a low upper bound on my total productivity.