Hello

There's a few words not often used in the English language
"Please" and "Thank You" are three

One more a simple HELLO to a total stranger may just break the invisible barrier so many of us walk around with. I can get tied into my iPod or  phone so when someone says to me and out of the blue "Hello" I  rejoice

Try it, Say HELLO to someone at the gym, walking along the street, the attendant at the car park

Trust me, you'll find a hello back at ya to warm the heart