A smile is a healing energy.  A genuine light.  A positive contagion that soothes all of our senses.  Even if we do not feel the true emotion behind the action, we fill positive space.  We change our mindset and it becomes who we are. The more we smile, the easier the act becomes and we spread universal harmony.  You are so beautiful when you smile, it is, indeed, the who in you.  Send Sunshine.