If A equals success, then the formula is A equals X plus Y and Z, with X being work, Y play, and Z keeping your mouth shut.
Your success and happiness lies in you. Resolve to keep happy, and your joy and you shall form an invincible host against difficulties.
When you are making a success of something, it's not work. It's a way of life. You enjoy yourself because you are making your contribution to the world.
Success is how high you bounce when you hit bottom.