EssaiClinique_CBSM

Methodology: Observational study, prospective, open, mono-centric, comparative, evaluating a psychosocial intervention type CBSM versus no intervention (group "waiting list"). Main Objective: To evaluate the impact of the implementation of a "CBSM" program on the stress management capacities of a pilot group of 30 patients followed at the pain center of Grenoble-Alpes University Hospital for chronic pain related to cancer or its treatment, compared to a control group "waiting list" Primary Outcome: Measurement of emotional stress (PSS14) Secondary objective: Determine patients' interest in this program and the feasibility of the program. Determine patient satisfaction with this program To evaluate the impact of the program on the quality of life of patients. To evaluate the impact of the program on the handicap perceived by the patients in connection with their pains. Evaluation of the impact of the program on the pain of the patients (on the daily behavior). Evaluation of the impact of the program on depression and anxiety. Determine the impact of the 3-month program of the 9th session on the different dimensions described above Inclusion criterion: * Over 18, * Currently treated or treated for cancer (solid or otherwise), any stage combined. * With chronic pain related to cancer or its treatment * Never benefited from the management of stress by this technique * Knowing how to read, write and speak French * Person affiliated with social security or beneficiary of an equivalent plan. Criteria of non-inclusion: * Life expectancy of less than 6 months * Patients unable to travel for 10 sessions on the structure (CHUGA) * Person deprived of liberty by judicial or administrative decision, person subject to a legal protection measure. Number of patients included: a minimum of 30 patients including, a minimum of 15 in the CBSM group and a minimum of 15 in the "waiting list" group (patients included in the waiting list group will participate in the CBSM program but will not be not analyzed in the CBSM group)