Orem (2001) believed that people have the ability to regulate their own functioning and development. Therefore the responsibility of nurses is to identify whether patients have the knowledge necessary to answer the question of self-care (Aggleton and Chalmers, 2000). In Linda's case, nurses first need to assess whether she has received sufficient air supply, based on the function of her cardiovascular and respiratory systems. Chest pain is Linda's main symptom. Chest pain manifested as shortness of breath, malaise, unusual tiredness, dizziness, restlessness (BHF, 2013). According to Linda's report, she already seemed short of breath, which makes it difficult for her to manage her daily life as she cannot do heavy work. Factors affecting breathing could be smoking because Linda has a history of smoking for a long time. Secondly, the nurse needs to assess Linda's nutritional problem because she often ate take-out food 2/3 times a week because she often felt tired and had no energy to manage the kitchen. But junk food contains too much fat and low fiber will make your angina worse. Linda's other potential problem includes dehydration, as Linda does not want to get up due to sleep disturbances during the night and may refuse to drink more water. At the moment Linda is independent with personal hygiene, she goes to the toilet. No evidence that Linda has problems with urination and bowel movement now. But the potential problem is that he may be suffering from constipation because he eats low-fiber, high-fat junk food every week. Fourth, activity and rest problem, Linda has to stop activity (Zumba class and even walking) due to pain and shortness of breath. Furthermore, Linda had sleep problems: she did not sleep well because she took Furosemide at night and needed to go to the bathroom all the time. Apparently it has already affected her sleep pattern, so it makes her feel so tired