The research carried out with patients followed in psychiatry outpatient clinics. As a result of the G-power analysis, the sample consisted of 23 interventions and 23 control groups. In the study, while the control group received only routine treatment, in the intervention group, Tidal Model-based nursing interventions were applied in addition to the routine treatment. Pre-tests administered before individuals were randomly assigned to the intervention and control groups. Randomization was created using the website randomizer.org. After this randomization was created, it was hidden from the physician who made the diagnosis of depression and from the researcher who conducted the interviews (allocation concealment). After the pre-tests were completed, the researcher (consulting faculty member) who knew the random assignment order was reached and the individuals were randomly assigned to the control or intervention group. Tidal Model-based nursing interventions were structured as 8 sessions in total. Each individual in the intervention group participated in a session for a total of 8 weeks, one session per week. In the eighth session, post-tests were applied to the individuals in the intervention group. Individuals in the control group were asked to come back 8 weeks after the first interviews and post-tests were applied. All interviews were conducted face to face. Recovery Assessment Scale (RAS), Difficulties in Emotion Regulation Scale (DERS), and Nursing Outcomes Criteria (NOC) were used.