Oh I just write down every single tiny step. Otherwise I'll forget it.
Today's morning-list was
1. Turn on radiator
2. Take out trash
3. Eat something
4. Clean the table
5. Brush Teeth
6. Work-clothes on
7. Turn off radiator
8. Work (which has a whole list of it's own)
It's kind of time consuming to make these lists, but they make sure everything gets done.
I get how it can be really overwhelming. Just seeing all the steps on my list can make me nervous. But now that I've had the list and followed it for a while, it seems less and less overwhelming for every day, and it's easier to remember that it really only takes half an hour.
Once I've turned the radiator on and can cross it off the list, even if it's the tiniest thing, it gives me a small sense of accomplishment, and that makes me less anxious and more motivated to go through the rest.