The effect of chronic insomnia carries along a physical and psychological state of dysfunctionality felt by the individual. The purpose of the study was to investigate the effects of hypnotherapeutic intervention applied in the case of patients who present insomnia accompanied by rumination. We performed the study of 42 patients who underwent the Symptom Checklist-90 (SCL-90) for the psychiatric evaluation and the Pittsburgh Sleep Quality Index (PSQI) for sleep quality at baseline, 1 month after the program and follow-up (2 months) after finalizing the program. Our findings revealed that hypnotherapeutic intervention that involves relaxation and positive self-suggestion leads to positive results among the patient who experience insomnia accompanied by rumination.