and I agree with Wahoo - if you are not feeling, then DON'T DO IT.
If you try to push yourself, you're just going to feel stressed out and that's going to make everything harder - even the basics of getting up and going to work!
Maybe put the ornaments away for this year - a tree with lights looks just as pretty - and be easy on yourself!!
Don't host anyone for meals, make reservations if you HAVE TO be responsible for a holiday meal, and just sit back this year!
Everyone deserves a break from 'faking it' through the holiday season. Maybe this year is your year for a break.
(Hugs)