One of the most effective methods of decluttering is to move everything out and then just put back what you need. The next time you need to clean your office, the kitchen cabinets, or a closet, consider moving everything out as your first step. Get a three large boxes. One for stuff that goes back, one for stuff that gets thrown away and one for stuff that should go elsewhere. Most people find it is easier to organize when the items have already been removed. It helps keep you from leaving something that belongs elsewhere.