When was the last time you did something nice for someone, had someone do something nice for you or witnessed someone doing something nice for someone else? Has it ever backfired? Me? I lived on a decommissioned army base for a while. There were a lot of soldiers and families still there. I always kept a $100 bill in my wallet. Whenever I was ahead of a military family in line at the grocery store, I'd give it to the clerk and tell her to wait until I leave, then give it to the person behind me.