3 One-In, One-Out
Another ‘rule’ you can make, is the ‘one in, one out’ rule. That means that each time you buy something new, you have to get rid of something old. This is a good system because it means that you will never increase the amount of clutter you own beyond what you currently have.
One-in, one-out is an easy way to keep your items in a kind of balance, and it can also be useful to help curb spending and other issues (hoarding actually correlates with a number of other impulse-control issues, so this might actually be pertinent).
When you’re next in the store looking at something and deciding if you want it, first decide on what you’re going to get rid of first. If you can’t think of anything, then you don’t buy that item. Simple!