Wow! Some of the judging here is really depressing.
I can identify. Best advice is to prioritise certain tasks, see what help your partner will give, even if he just takes them out for a few hours for you to do some housework, or even just get some time to yourself. I get more done when my son goes to his dads one weekend per month. Or consider outsourcing laundry or other jobs if you can afford to. I'm toying with that option because something has to give.
Don't let anyone make you feel bad. They have not walked in your shoes. Your children are warm, sheltered, fed, loved and cared for. That's the most important thing. I understand it can feel overwhelming.
I am a lone parent, have a child (6) with ASD (not high functioning) and I work full time to pay mortgage and bills to keep a roof over our heads. My son's dad doesn't earn much so I get little in maintenance. My son clings to me constantly and often won't sleep until 10 or 11pm, sometimes as late as midnight. He won't allow me to leave him until he's asleep. Some will say that's because I work and am not with him all the time, but needs must. I don't have much of a support network. I have a friend who can pick my son up from his after school club in an emergency if my train from work is delayed, but I would never ask her for help unless I was stuck. I don't want to abuse her goodwill.
Housework standards have slipped. My son makes a lot of mess and does not understand that he needs to tidy it up (his level of understanding is that of a toddler) though I keep trying. I'm depressed and exhausted most the time but I do my best to stay on top of it at least in the kitchen and bathroom, main living room and my son's room, and the laundry (though that threatens to engulf me most the time). Still not to my previous standards though and I get really stressed at the thought of visitors. I have rooms that I am embarrassed of. My own bedroom is by far the worst as I neglect that the most, nobody goes in there except me. If he falls asleep at midnight, I cannot be cleaning and tidying until 1-2am when I have to get us up at 6:30am to get him to his nursery where he has his wraparound care. Occasionally yes, but every day, no.
I do envy others sometimes but I don't expect anyone to help me out. I have friends with neuro-typical children who can get together and meet for coffee with kids in tow. I cannot do that due to my son's meltdowns and behaviours. But I accept that is my life now and am increasingly isolated. Work keeps me sane and I'm not giving it up
Sorry for my self pitying whinge. Having a really bad day.