I've got a 3yo and an almost 1yo. These are few things I try to do to keep on top of it all.
- clear kitchen before bed, sink clean, dishwasher on. Always nicer to come down to in the morning
- do some washing everyday, even if it's just a load. Colourcatcher sheets are good for letting you mix a half load of colours and whites
- kids clothes only go into wash when dirty. I make them wear trousers/jumpers etc for a couple of days. Same with us. Though obviously underwear etc changed daily
- never iron. Not worth the bother. Outsource anything that needs ironed (DH's shirts in our case)
- steam mop. Just bought one for my new laminate kitchen floor and so much less faff than mop/bucket. Not sure if that would be any good for arthritis?
- clean the bathroom when it's still steamy. Easier to clean. I often do a quick wipe over and bleach down toilet when brushing teeth. Baby wipes great for this. Okay, it's not a deep clean but is often good enough.
- anything for upstairs is left at bottom of stairs. Take something up each time you need to go up.
- use the dishwasher for as much as possible. I put pots/pans in. I'd rather empty it than do dishes and its tidier to put stuff in it than have it waiting next to sink
I agree with the previous poster who talked about getting rid of stuff. Too much clutter totally clutters my head as well as my house! It can be a long process to de-clutter but its well worth it. Less stuff = less mess. I work by "if I haven't used/worn it in 6 months, and I don't like looking at it, get rid of it". Exceptions are smart clothes because I rarely go out anymore and baby/kids stuff in case we have another. It gets bagged, tagged and goes into loft.
I also think its good to work out what bugs you the most and always make this the priority to do. I hate the floor being dirty so always Hoover/wash floor. Even if there are toys about etc, if the floor is hoovered the rest doesn't seem so bad. With the bedrooms, as long as beds are made, curtains open, a little bit of other mess is ok for me.
Once up and dressed in the morning, I often don't end up back upstairs until bathtime that evening so I try to get beds made, dirty laundry into basket, curtains open and a quick tidy before I come downstairs for breakfast. I do it while the kids watch a cartoon or play in their rooms.
We meal plan too then shop online. Takes a bit of getting used to but once set up, saves heaps of time, and saves spending loads in the supermarket but having nothing for dinner. I used to always do that!
I try to get dinner ready when my 1yo is napping. My 3yo doesn't always nap now so I try and get him involved. He will sometimes but often just plays with water in the sink etc while I do some chopping etc for later.
I love the motto "don't put it down, put it away" that I picked up on MN! Often find it going though my head when I'm tidying.
Finally, please don't be too hard on yourself! Can you get a cleaner for a couple of hours a week? Or get your DH roped in to do a bit more? Looking after 2 children is bloody hard work before you even consider the housework side. They'll only be little for a short time so don't feel bad about saying sod the housework and playing with the kids or going to a toddler group etc.