Since I've found some contracting work, my only real problem in life has been lack of time. I spend three or four hours a day walking and caring for our dog Winnie (she's very high energy and needs a lot of exercise to be happy), I sleep for eight hours or so, and I try to work for about eight hours per day. That doesn't leave a lot of time for "everything else".
So what to do? Winnie time isn't really negotiable, and Rita's schedule during the week doesn't allow her to help too much, especially in the winter when it gets dark early. She does that stuff on the weekend, but then I also want to hang out with her and Winnie. Reducing work time isn't really an option, both because it's interesting and because I need to earn enough to support us.
That leaves sleep. It's interesting that monophasic sleep, the idea of going to bed between ten and midnight and getting up between six and eight, with the whole intervening period ideally spent asleep, seems to be something of a modern invention, dating from the Industrial Revolution. In Europe in medieval times, a pattern called segmented sleep or biphasic sleep was more common -- people who were tired after a long day's work in the fields would come home and go to sleep immediately for "first sleep", then would wake up some time in the night to do whatever (eat, have sex, visit neighbours, pray, etc.). Then they would go back to bed for "second sleep" before getting up for the next day's work. And obviously, among nomadic or pastoralist people, sleep was often taken when and where it was possible, perhaps only as short naps.
It turns out that there are people who have experimented with a whole bunch of different sleep patterns. Most of this isn't really validated scientific research, and there seems to be a very wide range of individual adaptability to different patterns, so it might be difficult to come up with any conclusions that would apply to everyone out there, but some of the anecdotal evidence is very interesting indeed.