Pick a small space in a larger space - the junk drawer in the kitchen, the sock drawer in the bedroom, the jar of miscellaneous nails and screws and clamps in the toolshed... the sense of accomplishment you get from doing an easy fix can be multiplied when all you have to do is reach for the next nearest thing...
Disclaimer: I don't do this often, but when I have, it has generally worked for me. (Hoarder-in-training...)