Clutter is emotional—we hold onto things for a reason. “I always ask my clients how the item at hand makes them feel. If it brings up any negative feelings, let it go. If it brings happiness of course it stays! The idea here is to only be surrounded by things you absolutely love, says Morgan Ovens, owner of Haven, a home organizing company in Los Angeles. It’s hard to part with your favorite books, and you don’t have to. You do, however, need to consider whether you’re actually going to finish that book you’ve read half of, or the one you bought at a second-hand store four years ago and will never read again. They take up much-needed shelf space that you can use for new books, photos, candles, or general storage space. Here are thoughtful ways to donate your used books.