my go to advice (that i struggle to remember myself 🫠):

1. start by collecting and taking out all trash/recycling
2. make a list of areas/tasks and CROSS THEM OUT AS YOU DO THEM
3. a portable table that you can use as a work surface, and/or some empty storage bins, are worth their weight in gold. Just to have a temporary area to put stuff on while you clean/organize its home surface/container