a smile...

I had never felt before that a smile can do wonders.On the way to town,there is a kindergarten.I often look at children playing there.This time i was lost in my thoughts and worries,but still for a second i looked there.I found a cute kid looking at me.She was staring and wondering whether she should smile at me or not,and i was also in the same situation.Finally she smiled at me and I smiled back.I don't know why,but for some time i felt very much relieved and light.
I have always felt that a smile can take different meanings.But we don't usually realize its significance.