Sleep therapy, or hypnotherapy, is one of the most effective methods of treating many diseases. The first who began to study not normal experiences during sleep, but lucid dreams, was psychologist Stanislav Grof. Since during hypnotherapy a person lies down to rest on a couch, under the influence of these sedatives, the patient can walk in his dreams. A trance state occurs when all sensory sensations are muted and the zone of consciousness activity is activated. Now every branch of medicine is striving to add hypnosis to its arsenal for treating patients. Firstly, the psychological state always plays a huge role in the patient’s health. Insomnia, stress, nervous disorders, neuroses, depression and fear - all this can be treated through somnology sessions. The patient can initiate or direct his dream in the right direction through the hypnotist. Identifying a problem gives precise instructions for solving it, and the rest is a matter of technique. Sleep therapy is well suited for all ages, from infants (sleep disorders) to the elderly (experiencing past life situations, fears, stress and depression).