In the game of life, enthusiasm can make the difference between winning and losing. Enthusiasm is contagious; it is an emotion that can be communicated more easily than words. It is a force that springs from person to person like an electrical spark. It is almost impossible to be exposed to enthusiasm for any length of time without acquiring some of it.
Almost all aspects of life require some skill in persuading or motivating people, and there is no characteristic that will help you, more than enthusiasm.
There's the story of a salesman named Harry, who broke every rule in selling that was ever written. But before the sales meetings, his sales manager would tell him, "Now, Harry, I am going to teach the other salesman how to sell. I want you to sit at the back of the room and ignore everything I'm saying. You keep on making the same mistakes that you have been making.“