Can I join please? Everything I've read from you all, my brain is screaming 'same here!'
MH issues for about 20 years - anxiety, depression, social phobia. Now single parent of 2 young DC and a messy dog.
I'm trying to stop making mountains out of molehills with phone calls (despise them), DC party invites, dishwasher, homework/school letters, paperwork, laundry, rubbish in car etc but collectively, they are quite a mountain!
Some days I can barely find the energy or motivation to clean my teeth or find clean underwear. Most days I can face little more than sleep or wine (though I'm abstaining from the wine and finding this actually helps me s lot).
One thing I'm trying to do is remind myself that the dishwasher only takes about 7 mins to do, so that it doesn't blow up in my mind to an enormous, unachievable task. That is helping a bit so far. And if I only commit myself to that one task, it's an easy win as it makes a big difference to kitchen and mind with just a few mins effort.
Another thing is I put iplayer on my phone so I can watch something and be entertained while sorting washing or whatever - seems to make it less daunting/more like a treat if I get to catch up on a high-brow documentary eastenders while I'm doing it n
This week I'm struggling, so I've decided to just do one thing each time I move to a new room. Might just be removing a few bits of crap from the kitchen surfaces, but 1 min to make a small difference to the view in front of me definitely makes me feel a bit better about the place and about myself, and more motivated to then do another small task.
I wish I could be one of those people who sees that the dishwasher is clean and just gets on with emptying it without a thought - it would make life so much easier.
But one more thing I want to say is that if any of you are beating yourselves up by comparing your house or yourselves with those people who seem to just manage fine with everything, let's all try to take the extra pressure off ourselves and not worry about trying to be 'perfect'. It's ok that we sometimes need to curl up on the bed instead of mopping the floor 
Thanks, OP, for this thread 