Feelings are the result of our emotions.  Emotions are the body's physical and mental responses to our senses.  Recognizing and subsequently labeling feelings are the first steps in understanding and managing them effectively. 

While the entire face works together to express feelings, the major role is of the upper face, the muscles around the eyes and the eyebrows. The Duchenne smile is considered a genuine, heartfelt smile, because it involves the eyes, mouth, and a real positive emotion.  A socially polite, or fake, smile is created  only by the mouth.