This study was conducted with 64 patients in the nephrology clinic of a Training and Research Hospital in Istanbul. Data were collected using the Personal Information Form, the Chronic Illness Adaptation Scale, and the Self-Management of Chronic Illness Scale. Patients in the intervention group received peer support during their hospital stay, while those in the control group followed the routine clinical process. Participants in the intervention group took part in a structured peer support program, with pre-test data collected through the Self-Care Management Scale in Chronic Illness and the Chronic Illness Adaptation Scale. The program consisted of 4-6 sessions over one week, each lasting 30-45 minutes, focusing on disease information, self-care behaviors, psychosocial coping, and motivation, delivered by trained peers of similar age and gender. Post-test data were collected after the program to assess changes and analyze the effect of structured peer support.