The people whose first instinct is to smile when you make eye contact with them are some of Earth's greatest treasure.
To wear a cheerful countenance at all times and give every living person you meet a smile!
A smile doesn't exactly show how happy you are, but indeed a smile on your face shows how strong enough you are in fighting back your problems in life.
Life is the greatest gift God has given us, let's always live to cherish each and every second with a smile.