Inclusion Criteria:  Nursing staff of the CHR Metz-Thionville: doctors, nurses or nursing assistants Over 18 years old Not objecting to participating in the study Affiliated to a social security scheme  Exclusion Criteria:  Hospital staff  Not speaking and/or not understanding the French language. Having disorders of higher functions. With known history of schizophrenia. Deaf or hard of hearing. already trained in hypnosis.