This article arises from theoretical and practical research whose objective was to present essential elements for the investigation of Schema Therapy, through a case study design.This article discusses a 32-year-old female patient, who comes for consultation due to a lack of boundaries.A variety of tools were used to assess the patient, including the semi-structured interview, Young's Schema Questionnaire (YSQ), and therapeutic activities.Once the results were obtained, an intervention plan was developed to achieve the therapeutic goals; as a result, the patient showed improvement in the initial symptoms, increased her self-esteem and acquired skills to cope with her activated schemas, helping in decision-making and problem-solving, which led to an improvement in her interpersonal relationships.In conclusion, the schema therapy used was effective in reducing the patient's initial distress.This case study seeks to contribute to research on Schema Therapy in the clinical context.josha.org