This ethnographic study aimed to understand the meaning of quality of life from the perspective of people with coronary disease submitted to myocardial revascularization surgery. Direct observations and semi-structured interviews were used for data collection. Data were analyzed through careful reading, identification of units of meaning, thematic groups and themes, and interpreted according to interpretative anthropology and the Centre for Health Promotion conceptual model of quality of life. The identified theme, quality of life being happy as possible, is based on being healthy, having a job and a harmonious family. These were considered dimensions for a "tranquil and happy" life. The meaning of quality of life is complex, subject to new significations throughout life, and related to the socioeconomic and cultural context, including, in the case, the experience of the health-disease process.