There are a few things you can do to keep your bedroom door from closing on its own. One is to adjust the hinges. If the door is hanging unevenly, it may be causing the door to close on its own. Another thing you can try is to put a wedge under the door. This will hold the door open and prevent it from closing on its own. Finally, you can check the weatherstripping around the door. If it is old or damaged, it may not be sealing properly, which could cause the door to close on its own.