When I’m in my own messy kitchen, I can’t find a starting point. I feel like I’d have to be this big octopus creature that stands in the middle and does a thing with each tentacle simultaneously: Threw this into the garbage, put that into its place, start a heap of things that need to go into different rooms, clean neglected things such as the area behind the sink, clean the floor and main surfaces (but there is too much stuff on it even if I had the 10 tentacles), do dishes, put clean dishes away, throw out expired food from every shelf and the fridge, complex sequences such as bagging the garbage -> put new garbage bag in …
I get 0 done without lists. People laugh about my lists, because every tiny detail has to be on it. So let’s say I’m in the situation you described, and it’s 10:30 am. What I’d tell myself is: There isn’t even a list, so let’s make a list, and if it’s the last thing I’ll do before lunch.
The list is quite often as detailed as:
Then, even in my worst state, I can tell myself: You can check off just the next item. That’s not overwhelming, that’s not too much.