This is a simple exercise anybody can do; Smile :)

The curve of our smiles are the only curves that can set things straight. When somebody is starting to get testy, just a gentle smile on your face can make that person crank the testiness volume down. A warm smile can reassure or encourage people when they're in-doubt. An empathetic smile is a signal to a sad person to chin up. You can even smile without moving your mouth or lips; you can smile w/your eyes, and that is inviting good Karma. Let's all start practicing to smile everyday until our face gets stuck that way! ;)