Study aim: Comparing the effectiveness of mindful interoceptive desensitization and behavioral exteroceptive desensitization in reducing the anxiety symptoms Design: As a one-way blind randomized clinical trial intervention, all eligible individuals selected (at least 90 individuals), and randomly assigned to three groups. Each group will be evaluated before entering the study, after four intervention sessions, and finally two months after the intervention (follow-up). The first group will receive intervention based on MiCBT protocol, the second group will receive four session of systematic desensitization, and the third group will receive Jacobson's progressive muscle relaxation. Settings and conduct: The study is performed in Tehran and in the psychology clinic of Taleghani Hospital. Meetings are held in-person and in accordance with the protocol, and in order not to create bias for participants, all individuals will receive medical intervention. Participants/Inclusion and exclusion criteria: 1) having the consent to participate in the study, 2) having a score of 16 in the Beck Anxiety Questionnaire, 3) not having psychotic symptoms or a recognizable psychotic disorder (assessed by a clinical psychologist), 4) not having an acute cognitive problem, 5) not participating in a Simultaneous psychological intervention, 6) not receiving medication for psychological problems, 7) not having suicidal thoughts Exclusion criteria: 1) need to be hospitalized or prescribed medication, 2) refusal to continue research Intervention groups: The study groups consist of three groups, the first group will receive introceptive desensitization, the second group will receive extroceptive desensitization, and the third group will receive progressive muscle relaxation treatment as the active control group. Main outcome variables: State-trait Anxiety Beck scale for anxiety Mindfulness Based Self-efficacy Sale SCL-90