by Una Hearne. If you knew for certain that something you were going to do or say would make someone's life better, you'd just go ahead and do it - right? What if you knew for a fact that smiling at the person on the checkout would make them feel better, would you spare them a smile? If telling someone how great they are gave them the courage to go and do something brave and brilliant, would you choose to tell them? If you knew you were influencing a child, just by the way you live and what you say, ...