Older adult population is being increased in Iran as well as in the world. Power is a resource for living that is present in all individuals, and has a positively uplifting effect on quality of life. In this book it will be reviewed the ageing theories, successful ageing, self care in ageing, some problems in this age, factors influences on sense of power and empowerment, concept of power, empowerment theories and manifestations and outcomes of powerlessness and finally empowerment process. Studying of this book for policymakers, students, and colleagues is recommended.