Another, arguably better, way of going about reducing one's tendency toward mindless shopping is to follow the 'one in, one out' rule. Its name is self-explanatory: every time you bring something new into the house, you must remove an item.

The "One In, One Out" rule is a minimalist wardrobe management strategy that dictates for every new item of clothing you purchase or bring into your home, you must remove one existing item from your closet. This rule is designed to prevent "clutter creep" and ensure that your wardrobe stays at a fixed, manageable size. In 2026, this has become a popular sustainable fashion practice, encouraging consumers to be more intentional about their purchases. If you buy a new pair of jeans, you might donate an old pair that no longer fits or sell a pair on a resale platform. The psychological benefit is that it forces you to evaluate whether the new item is actually "better" or more useful than what you already own. For those with limited space, such as city dwellers or frequent travelers, this rule is essential for maintaining an organized living environment. It also promotes the "circular economy" by ensuring that clothes aren't just sitting unused in the back of a drawer but are being cycled out to someone who can still use them.