FP - it sounds like it's all just getting you down and tbh, you sound like me at the moment.
I'm really struggling and I know it's because I've just got too much on. Got the 3 kids (all under 4) all day then have to work at night and weekend (work freelance and while dh is saying 'just turn work down' I don't feel I can because we are moving house and need the money and don't know when a 'quiet' spell will come) and on top of that, I've done all the Xmas shopping myself, still stuff to get, wrap etc and we are doing Xmas lunch so there's that to sort out....then we move house on 5th Jan. Add to that all the usual stuff like housework, paperwork, washing and I'm running on empty with practically no time to get my head round anything.
Yesterday I could quite happily have walked out. I considered ringing dh to say if he wasn't home in 10 mins I was leaving the kids in the house. I know I've not completely lost it because I know I wouldn't do that in a million years, but I am definitely getting down about the level of stress I'm under at the moment and I'm worrying about ds2 (2yrs) whose behaviour is really challenging at the moment.
Sorry, I've hijacked your thread a bit and it's upsetting me now but I feel better for getting it off my chest.
I think there will be a fair few us at the moment whose plates are just overflowing and we are buckling under the weight. It sounds like you are coping with it by working through your 'to do' list but if you can tonight, get a nice glass of wine, run a bubble bath and just chill out.
Wish I could take me own advice but I've got work, work and more work