2. Control the volume.
Screaming is a very clear sign that you’re losing your cool and is definitely going to prompt the other person to take the upper hand. If you remain even-keeled with your volume, you will appear calm and collected (even if on the inside you want to rip his head off).
Think back to when you were a kid, for example. Remember when your Mom would get upset, but instead of yelling she would have this really scary, almost numb approach to her demeanor? Sorry for the flashbacks, but ultimately, just replicate that.
Remember: Just because you’re the loudest person in the room, it doesn’t make you the smartest person in the room.