I've spent the last couple of years enjoying posts from the blog/website Zen Habits. They are starting out the New Year with a special (and free) Clutterfat Challenge. Instead of getting rid of bodyfat, you've guessed it, the goal is to get rid of some of the clutter around you. I believe Saturday, January 7th, is the last day to sign up to be part of the free course challenge.
Even if you aren't interested in the challenge itself, they have some commonsense tips on de-cluttering HERE. Along with a link to Leo's Clutter Webinar.