Happiness is something that multiplies when it is divided. (Paulo Coehlo, Brazilian lyricist)
A truly happy person can hardly keep his joy to himself. It shows up in his smile, his speech, and his behavior. He or she will rarely keep it to themselves. Unlike sadness—which can often be clearly seen in another, joy may not be shared quite as easily or spontaneously. The person who shares his happiness is all the more blessed and happier. Do your best to make others happy, too.
A glad heart makes a happy face . . . for the happy heart, life is a continual feast (Proverbs 15:13, 15). Be happy with those who are happy. (Romans 12:15)