Nursing instructions are traditionally expressed verbally or in writing making them harder for patients to practice in everyday life. These nursing instructions are therefore not only ineffective but also frustrating so patients tend to give up. By using the transtheoretical model process to assess different stages, the author offered different information and advice on possible solutions. The care period ran from May to September, 2012. Information was carefully collected through observation, personal interviews and telephone calls. At the time of writing, the case was in the preparation stage with the average level of phosphorus at 5.7 mg/dl. Although the patient had already gone through dietary control, phosphorous was still frequently higher than 6.0 mg/dl. By using various strategies from the transtheoretical model, the author assisted patient with entering a period of action. During this period, the author succeeded in teaching the patient to use the correct tools during meal selection and preparation, creating an atmosphere of discovery and self-accomplishment throughout the process. By sharing this experience, the author hopes to provide other medical personnel with an example of how the transtheoretical model of behavioral change can be used to care for this type of patients.