This article describes the experience of learning self-care by a male patient newly diagnosed with rectal cancer who received tumor resection surgery and colostomy. The nursing period spanned from April 21^(st), 2017 to April 23^(rd), 2017. We conducted holistic data collection and analysis using a physiological, psychological, social, and spiritual assessment model. The analysis revealed the following health-related issues: knowledge deficit, situational low self-esteem, and a potential risk of infection. A literature review provided relevant knowledge for the prevention of postsurgery infections and diet. Successful cases motivated the patient toward positive self-approval and negative emotion release. Additionally, the patient was inspired to accept his illness and to learn about postsurgical self-care. The changes in the fistula pouch were recorded and combined with progressive reply teaching on a cell phone, enabling the patient to acquire care-related knowledge and skills. The ultimate goal of self-care was attained.