Toss out
Someone once told me of a ritual she performs every year on her birthday: Whatever age it is you turn that year, throw out that number of things. I never get around to it on my last birthday, but I think I may do it for the next one. When I look around my apartment I realise that I could triple the amount of useless crap I could throw out, and that's not even counting the monstrous amounts of old papers, bills, and now useless magazines. I shall have to get on this very soon, before my place is unnavigable.