Keeping a count of how much I get rid of is very motivating for me for some reason. My goal for years has been to give away 100 items a month, 1,200 for the year. I've never quite made it, though I've made it to the 700s some years. I write monthly totals in my paper calendar. When I feel despair about my clutter issues, it helps me remember that little by little, I'm making progress.