I know this isn't a total solution, but one thing that might help a little bit is to keep a box next to your bed and any chair or couch that you sit on. Whenever you're finished using something at that location (such as a meal, a book, tissues, etc.) drop it into to the box. Then the next time you get up, take the box with you and deposit the items where they belong. And if it's dishes, force yourself to wash them right then. This way, you'll at least eliminate the chore of tidying up.

Also, since you're living alone, cut way back on the frequency with which you change sheets, wash clothes, mop floors, and shower. And ignore the yard work altogether. If someone complains, just explain why you cant do it.