A smile is exactly what places us among the most-positive of humans. While a smile can be feigned, even the feigned ones are easily detectable and would have passed the message it was meant to deliver even before the observer recognizes its roots and disposition. Indeed, it would be safe to infer that it is a win-win stake to smile all the time. It exudes inner peace, happiness, friendliness, warmth, and all the other contagious positivity it has...