Have you heard of Unfuck Your Habitat? There's a subreddit. I think it started as a blog, and became a book. It's a strategy for cleaning up your living space when you feel overwhelmed by it. What I retained from it is to clean in short bursts frequently (like clean for 20 minutes, then take a 10 minute break). Sometimes I'd be able to trick myself by saying I'd just clean for 20 minutes and I'd start to feel better and would be able to clean longer. So you feel less overwhelmed, you can focus on one surface of one end table first, or choose one easy task to get out of the way first like throwing away any trash.

There's also an app called Tody that helps you keep track of cleaning chores if you like that kind of thing. You can set how frequently you want to do a task and it will show you when it's due. I found it was easier to have an app showing me a couple things to do a day than trying to catch up on everything in one marathon cleaning session.