My house is a messy piece of shit, just like me.

Start with an area, any area, it can be a corner of a room. If there’s trash, bringing a bag with you and putting it directly in will be easier when the bag is full, put it outside if you can.. If its junk you don’t want that’s good, start a pile of it to donate or whatever (I do that). Work for small amounts of time, even five to ten minutes. Take a break for a bit, go back to that area until it’s done.
If it involves dishes, don’t load up the sink fully. Run your water, put in a few dishes at a time, wash those, then put more in the sink. You can let them soak, take a break come back to it. Play music during this process if it helps. I like playing a movie I’ve seen before when I clean (but I have a portable dvd player instead of a tv so I can move it around) so its background noise and something to help focus. Audio books have helped, I’ve also downloaded an app that says websites out loud so I can listen/read while I work.
Mice like food, so if it’s cupboards or drawers, again go one at a time, clean it out, take breaks come back.
Laundry, sort into piles as you come across it, preferably on a clear surface. Don’t have to wash it right away, but making it organized first for when it needs washed can be easier to just grab and go.
If there’s papers, make a pile so it’s all in one place. If its stuff you don’t need like junk mail you can throw those out immediately, go through the rest later.
It can be less stressful breaking it up. It’s a bit less overwhelming and sometimes easier than forcing yourself to clean for hours, less counterproductive than your punishment idea. Go back as needed, but again don’t try to do everything at once, you’ll just be overwhelmed.