I dare not turn off the lights when I sleep. I am afraid of the dark. How should I adjust my mentality?

Dare not turn off the lights when sleeping. If you are very afraid of the dark, you can relax yourself appropriately, such as listening to some light music before going to bed to relax yourself. If you try not to turn off the lights, don't force yourself to turn off the lights. In this case, you will be unable to accept this situation for a while and will be very scared.