The article discusses the role of a nurse in diagnosing diabetes, identifying risk factors, teaching self-control, and preventing complications. The basis for achieving therapeutic goals is the education of patients with diabetes, the purpose of which is not only to inform them about the complications and treatment of diabetes, but also to support independent decision-making by the patients themselves through the interpretation of their own behavior and providing them with psychological help in controlling the disease. This will allow for the safe achievement of treatment goals agreed with the therapeutic team, where the nurse plays an important role as a full participant.