The "art of living "means the correct / beautiful  way of living. The thing we take so easily is very precious-life. Hence, to handle such a precious thing, we should know the correct way to live. It doesn’t mean losing freedom and live totally bounded by rules, it means to help you enhance your freedom and life with discipline and Humanity.  If we want to live  in a beautiful way,we need to know many things such as humanity,  morality, manner, adapting to any environment existence etc.