A smile is the easiest way to make someone happy, and its also the cheapest way. You never know what’s behind the mask everyone puts on to protect their very selves from the world. People you thought may be very happy and sucessfull may actually be very tired, sad or even suicidal. You never know! A smile can help so much. I know I feel much better when other people is smiling to me. It means they are friendly and they look at me as a nice person (for most of the time, there is people who can fake smiles.. but dont care about them). Many people have a bad self-confidence.. It could help many people to get trough the day much easier if you give them a smile. Smile to everyone who meets your eye(dont go around smiling ALL the time, people will just think you are crazy if you do)! In return you may get lots of smiles back, and maybe YOUR day will be a little better too. :-)