One of the things I love the most in my wife is her smile — not least because it’s a true smile. She’s a happy person.

But it also works the other way around. People who smile more make more friends, feel better, are more confident, attract more people, close more deals, get more “yes” answers than “no”, are healthier — and so they end up happier. That’s not just me saying it. This is research-proven. Just look it up.

So, what if you tried to smile more?