The focus of this study was to understand the process of behavior change in a cesarean section primipara during her early postpartum period. The study was conducted by the field method with the researcher as the subject’s primary nurse. Content analysis was employed to analyze and categorize the 6 sections of the behavioral process record, which were taken down in narrative form by the researcher duing the nursing process. Three stages of behavior change were identified: (1) Lack of confidence and uncertainty about self care and newborn care. (2) Actively intending to explore and learn about self care and newborn care. (3) Adjusting caring methods and planning for the future. In this study, the researcher provided information and caring to the subject individually. It assisted the new mother in becoming a competent mother.