It's normal for horror novels to cause fear at night because the horror elements in the plot stimulate the brain to produce nervousness and fear. Here are some suggestions that might be helpful: Relax the body: Relaxing the body before going to bed can help relax the brain and reduce nervousness and fear. Try relaxing your body with deep breathing, yoga, or meditation. 2. Change the environment: You can try to change the room or environment before going to bed, such as turning off the lights, lowering the volume, changing the pillow or mattress, etc. 3. Avoiding stimulation: avoid stimulation before going to bed, such as not drinking alcohol, not eating coffee and spicy food, not reading horror novels, etc. 4. Imagine positive scenarios: Try to imagine positive scenarios such as future travel, family life, job opportunities, etc. These imaginations could help relax the brain and reduce nervousness and fear. 5. Use sleep aids: If the above methods still can't help you fall asleep, you can consider using some sleep aids such as white noise, eye masks, moisturizer, etc. It should be noted that if these methods still cannot solve the problem, it is recommended to consult a doctor or a professional psychiatrist for more professional help.