Community health nurse or public health nurse is engaged in the delivery of health services to the public or community. Health education constitutes major thrust area of community nursing services. The focus of health education is on health risk, risk factors to health problems, and behavioral modification of the individual or group to achieve the desired health goals. Since an individual's own actions or behavior can make him/her healthy or ill, modification of health behavior is the ultimate aim of health education. In the next section, we discuss about health behavior and the various factors affecting it.