The aim of the study is to determine the effect of the Health Action Process Approach (HAPA) based program on the treatment compliance and quality of life of people undergoing hemodialysis treatment. The hypotheses of the study are as follows: * The Health Action Process Approach Based Program has an effect on the treatment compliance of people undergoing hemodialysis treatment. * The Health Action Process Approach Based Program has an effect on the quality of life of people undergoing hemodialysis treatment. * The Health Action Process Approach Based Program has an impact on the results of laboratory tests and clinical parameters of people receiving hemodialysis treatment. The population of the study will consist of people receiving hemodialysis treatment in the main service building and additional service building of Kahramanmaraş Necip Fazıl City Hospital. Patients who meet the criteria of ''volunteering to participate in the study, being over the age of 18, being literate, not having any problems that may prevent communication, not having a history of neurological or psychiatric disease, being on hemodialysis treatment for at least six months, and the vascular access used for hemodialysis being effective'' will be included in the study. Written informed consent will be obtained from patients who volunteer to participate in the study. At least 32 people who meet the inclusion criteria will be included in each group. The intervention group will receive a program based on the Health Action Process Approach (HAPA). No program will be applied to the control group. The data collection tools of the study consist of the Participant Information Form, Participant Evaluation Form Based on the Health Action Process Approach, End-Stage Renal Disease Adherence Scale (ESRD-AQ), Fluid Control Scale in Hemodialysis Patients, Diet Information Scale of Hemodialysis Patients, Diet Behavior Scale of Hemodialysis Patients, Quality of Life (SF-36) Form, Laboratory Tests Follow-up Form and Homework Form. Measurements of the groups will be taken at the beginning of the study, week 6 (at the end of the program), month 3 and month 6.