Trickle down Grace-onomics

One person can't make a difference in the lives of all the people of the world, but one person might make a difference in the lives of a few.  If each of those few continues spreading the positive feelings and each makes a difference in a few others, then we have "Trickle-down Grace-onomics."  Here's my challenge: post something positive instead of negative, and challenge your friends to do the same.  How far can we make this spread?