Smile

“We shall never know all the good that a simple smile can do.” - Mother Teresa

A smile can brighten up someone’s day, and is the precursor to laughter which (incidentally) is the best form of medicine. Smiling elicits the same happiness that exercise induces, as far as our brains are concerned. In other words when we smile, we feel good.

You’re actually better-looking when you smile

when you’re smiling, the whole world smiles with you

why not get others to smile too?