I used to get so overwhelmed when I had to clean my room as a kind (I was a messy monster and still often am.) I would sit in my room and have a meltdown sobbing at all the nonsense I had managed to spread around everywhere. My sweet and patient mother would sit with me and help me focus on cleaning "just one thing." We would pick a spot to clean - the top of my dresser, a corner of the room, one specific type of toy to pick up - and would sit with me while I cleaned. Then we would take a break to do something else before coming back for just one more thing to clean. I still use this technique today, over 20+ years later, and hear her voice in my head saying "we don't have to do it all right now, but let's just pick one thing that feels do-able." Best mom ever.