The psychological model of insomnia based on cognitive model of insomnia and cultural approach in psychosomatics is discussed in this article. There are emphasized perpetuating factors of insomnia and different kind of behavior as insomnia consequences. Social psychological factors triggering and increasing anxiety and attentions to sleep are supposed: personality and culturally specific beliefs about sleep and insomnia (beliefs about sleep hygiene, sleep control, attitude to insomnia in the society). Different patients’ reactions to the insomnia — psychological dependence on medicine, sleep “ritual”, self-restrictive behavior, and active changes in life — influence on the development and treatment outcomes in a different manner.