Taking things easy is the easiest thing.
One of the male models I follow on fb once told that smile is the easiest emotion for him to show on camera. Simply because the world around him is imperfect, funny and ridiculous at the same time. People are ludicrous and amusing in their pseudo-misery in search of happiness and this guy smiles when he thinks of that.
But the funniest thing, he says, is that people are so fixated on their own ego that don't notice that happiness is already in their heads and lives. And the biggest secret of smile and laughter is that this guy knows that he is just like others. How can you not smile after realizing this simple irony of life.