Bobby Hebb once said:
“Sunny” is your disposition. You either have a sunny disposition or you have a lousy disposition. Either you’re screaming at someone and angry, or you say, ‘No, uh-uh, I’m not angry. Let’s discuss this thing in a nice and pleasant way.’ Well, that pleasant way is a sunny disposition. Instead of confusing, and building chaos, let’s make this day a nice day for everyone. Spread that type of news so that you can become a little more relaxed and not filled with chaos, because chaos can become a killer.

Sunny - Bobby Hebb
From the album Sunny, 1966