Keep your temper. A decision made in anger is never sound.
Ford Frick
Keep your eye on the ball.
Take pride in your work at all times. Remember, respect for an umpire is created off the field as well as on.
Avoid sarcasm. Don't insist on the last word.
Hear only the things you should hear - be deaf to others.
Review your work. You will find, if you are honest, that 90% of the trouble is traceable to loafing.
I'd hate this to get out but I really like opera.
Never charge a player and, above all, no pointing your finger or yelling.
Keep all your personalities out of your work. Forget and forgive.