Balance restored.
Saved by the deus ex machina - the two biggest things on my plate at work disappeared in a puff of smoke today. One of the projects is completely frozen until February, at least, which gives me plenty of time to catch up. The other one actually turned out to be much worse than originally thought, so somebody else decided to try to find a different solution, and took it off my plate overnight. I didn't ask for the help, but it's nice when it appears out of the blue like that. Works for me. Work/life balance restored. At least for tomorrow.