Sleep, sleep, sleep! (Sorry. That's probably not much help for most of you.)
I work until midnight. Most of my coworkers go home to television or partying with friends, especially Fri. and Sat. I head home to 1/2 glass of warm milk and dulce de leche or 1/2 cup of creamy cottage cheese. Then straight to bed. (Wash and brush teeth, of course. Morning dairy-mouth tastes terrible!)
When I arise six or seven hours later, I do laundry, read the paper, and eat breakfast, all concurrently. If it is custody week, I take Ellie to the River for about 1 1/2 hour jaunt. If not, I clean/repair house or run errands. Then it is bed time again from 11:30 to 1:30. Get up, eat lunch, shower and off to work.
Weekend variation: Sat., same only late-morning, run errands; Sun., same, only church first. In the summer, the midday nap is a must; in the winter, not so much. The weekend afternoon is usually mine, and bedtime comes earlier 10 or 11pm.
Notice all the sleeping? Yeah, me, too. I get invites all the time for parties with coworkers. Very rarely attend. When I do, I am the master of the arrive late, leave early schtick.
Written out like this, it sounds like no fun, but actually I find it rewarding enough. After all, there were years when I couldn't do much more than sleep, work, and sleep some more.