A. Fear of insomnia: Many insomnia patients have “insomnia characteristic anxiety”, once in bed at night, worry about not being able to sleep, or try their best to get to sleep, the results are counterproductive. The higher neural activity of the human cerebral cortex has two processes: excitation and inhibition. During the day, brain cells are in a state of excitement. After working all day, they need to rest and enter the inhibited state and sleep, and then naturally turn awake after a night of rest. The excitation and inhibition of the cerebral cortex are coordinated with each other, alternating to form the rhythm of sleep from week to week. “Fear of insomnia, want to sleep”, the original intention is to sleep, but the idea of “fear of insomnia, want to sleep”, itself is the excitement process of brain cells, so the more afraid of insomnia, the more you want to sleep, the more excited the brain cells, and therefore more insomnia. Second, the dream of harmful psychology: many people who claim to have insomnia, can not correctly view the dream, that the dream is a poor performance of sleep, harmful to the human body, and even some people mistakenly believe that more dreams is insomnia. These misconceptions often make people anxious, worried that after going to sleep will dream again, this “vigilance” psychology, often affect the quality of sleep. In fact, science has proved that everyone dreams, dreaming is not only a normal psychological phenomenon, but also a way of working of the brain, reenacting daytime experiences in dreams, which helps memory and clean up useless information. The dream itself is not harmful to the human body, what is harmful is the psychology that “dreaming is harmful”, so that they have a psychological burden. Third, the psychology of self-blame: some people feel guilty and self-blame after a fault, reenacting the fault in their heads, and regret that they did not handle it properly. During the day, due to more things, self-blame and remorse a little lighter, to the night is “wandering” in the self-blame, remorse fantasy and excitement, long sleep.