When one does not smile back at you, smile anyway.  By grace, the energy you are radiating from that smile will have an effect.  This effect may or may not register on the outside of that other, but trust us, it will be acknowledged at a soul level. You make a difference.  Equally important, for in truth, there is no other at the level of ULTIMACY, you heal yourself just as much as you smile.  It does not have to be a fake “everything is all right with the world” smile.  How about an “I know that ultimately all is well” gentle smile that speaks volumes.  Never forget:  you are so very loved.