A face that “lights up” with a smile is so very much easier to look at than a scowl. A person with an optimistic outlook and positive attitude is nicer to be around than one with the opposite. I realize it can hard to be around negative, down, people with chips on their shoulders, but a cheerful look can transform the crankiest of people by bringing delight to their hard heart. A sincere smile and kind word can change a heart of stone into a heart of flesh.