Discardian John Hritz has gone zero-sum with books, CDs, clothes, DVDs, etc.
By zero-sum, I mean that to buy one, I donate one or more. This gets
me out of the binge and purge mentality of organizing. I try to have a
place in mind for something I want to buy and if there's already
something there it has to go.
This is a great method to give yourself time to adjust your habits and home. Try it out for a few weeks!