IRCT20180218038786N2 IRCT 2019-08-30 Vice chancellor for research, Hakim Sabzevari University The effect of Group Therapy Based on Acceptance and Commitment on Cognitive Flexibility, Suicide Ideation, Depression and Hopelessness in Soldiers The Effectiveness of Group Therapy Based on Acceptance and Commitment on Cognitive Flexibility, Suicide Ideation, Depression and Hopelessness in Soldiers 2019-07-08 anticipated 30 Complete https://irct.ir/trial/37393 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: The allocation method will be simple random. Hiding the assignment using a computer is that the computer creates random numbers between zero and one. If the random number is less than 0/005, the individual will be assigned to the test group, and if the random number is greater than 0/005, the individual will be entered into the control group. In this process, people who enter the study list will not be aware of how the treatment is allocated before the intervention. N/A Depression. Intervention 1: Intervention group: The Intervention group will attend Acceptance and Commitment Group Therapy Sessions for 8 Weeks (8 sessions of two hour). In General, the Treatment Plan for this Group Will be to at Assess Previous Session Homework, Teaching a New Technique and Giving Homework for Future Session. Intervention 2: Control group: The control group simultaneously (8 two-hour sessions for 8 weeks) will continue usual care plan of the group. 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 The release schedule is still unclear