IRCT20221017056217N1 IRCT 2022-12-17 Rajaie Cardiovascular Medical and Research Center The effect of coping skills training on depression and adherence to treatment of heart patients investigate the effect of coping skills training on depression and adherence to treatment in patients with heart failure referred to Shahid Rajaei hospital 2022-12-22 anticipated 72 Complete https://irct.ir/trial/66363 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Education/Guidance, Randomization description: Patients will be randomly selected based on the included criteria and allocated into two intervention and control groups of 35 people using a lottery. After selecting each patient, the patient's name will be written in a sealed envelope, and someone other than the researcher will be asked to choose whether to be assigned to the intervention or control group, Blinding description: In this study, randomization will be done by the researcher, and the other people, including clinical caregivers, outcome evaluators, and data analysts are blind to the allocation of samples to control and intervention groups. Thus, after the intervention by the researcher, the questionnaires will be completed by the assistant of the researcher who is blind to the type of sample group. The data also will be analyzed by a person who is blind to the type of sample group. N/A Condition 1: Heart failure. Condition 2: Depression. Intervention 1: Intervention group: Coping skills training will include relaxation methods, mental imagery, an adaptation mechanism, a problem-solving method, and anger control in the form of telephone conversations and mutual interaction. This intervention will be taught in 12 sessions of 20 minutes during one month. Intervention 2: Control group: Will not receive any intervention. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No definite plane