You’ve been tasked to give a speech and you want to do a good job. So you ask for advice (or advice is given to you) on how to best prepare for a speech and someone tells you to practice your speech in front of a mirror. On the surface, it sounds like a great idea – after all you can see how your body movies and what you look like when you speak. But in reality, speaking in front of a mirror can actually cause you to develop bad habits and can add to your discomfort if you already find speaking to groups difficult.