The key to finding happiness in your decluttering efforts is answering this question: Once you decide to ditch your stuff, what do you do with it? Unless your soon-to-be-former possessions truly qualify as trash, you won’t want to set them out at the curb on pickup day to clog up your local landfill. Instead, the key is to decide whether to give your stuff away, sell it, swap it, or recycle it. Here’s how to deal with a variety of items. Books, Music, Games, Movies Donate books to your local library or to programs that will ship books to soldiers overseas or to prisoners. If your town has a Little Free Library program, you can leave books in a location near you. If you’d prefer to sell these items, consider selling them at your next yard sale. You can also sell books and music to a used book store or …