If leaving your door open lets in a little light or helps you feel less claustrophobic, for example, then leave your door open to help make your surroundings more comfortable as you try to fall asleep. If closing the door as you fall asleep helps you feel more secure, then leave it closed as you try to fall asleep. Anything you can do to make yourself feel comfortable and safe as you fall asleep will contribute to your ability to fall asleep after seeing a movie that scares you, etc. Scary themes in film, television, etc. are often associated with the dark. If you leave a light on as you try to fall asleep, you can help mitigate your fears and fall asleep more easily. Too much light while you sleep, though, can actually prove detrimental to your health, so it's best not to make a habit of it.  Leave a night light or small lamp on. This may give you reassurance without providing too much light and keeping you awake. A television can provide soft light as you fall asleep too, even if you mute the sound and simply leave the television on for the light it gives off. Think about if there are any items you have or rituals that you find comforting. A lucky rabbit's foot you can rub, for instance, or a favorite blanket or stuffed animal to snuggle. Try petting your dog or cat, or hanging a dream catcher. Or maybe you find the act of making a cup of sleepy time tea and sipping it calming and comforting. Identify these self-soothing behaviors (you may need to experiment a little) and use them to help comfort and calm yourself. If you are spiritual, you could keep something that is part of your religion nearby, such as beside the bed or under your pillow. Some items might include a rosary or crucifix, etc.

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Write a summary of the previous text in Vietnamese:
Mở cửa phòng hoặc đóng cửa – tùy thuộc vào hành động nào sẽ khiến bạn cảm thấy thoải mái hơn. Để đèn sáng khi ngủ. Cất bùa may mắn hoặc vật hộ mệnh (tchotchkes) gần bên mình.