I have been really, really tired for quite some time, despite getting a whole week off from work between Christmas and New Year's. For the last few days of the week, I'd had a headache that just wouldn't quit.
What I did on Friday after work and for all of Saturday was SLEEP AND READ. I only left my bed to go to the bathroom or to get orange juice, tea, toast or tapioca (or to let the dogs out). The poor dogs are bored to death, I fear, but today (Sunday) I finally feel almost human again. For today, I'll go for a walk w/the dogs, catch up on my dishes and vacuuming, and do a little "cooking ahead" for the week but will also make time for a long, soaky bath w/Epsom salts and essential oils.
FireSprite, I related to your post about how you were doing just enough self care to keep the cup from becoming completely empty but not enough to actually fill it back up. I have been doing kind of the same and look forward to tipping the balance towards the positive side in the weeks to come.