Sara,
When having a confrontation with someone either in positive or negative conversation will happen in life. The secret to your comfort level is to know yourself and be comfortable with your views, principles and capabilities. Emotion often is the factor that lets confrontation get out of hand. The best way to communicate is not to let yourself escalate your emotion into the conversation. Remain in control by your ability to stay non-emotional. Listening is 87% part of education. Listen, remain calm and speak with confidence helps to keep the conversation on the right track.
Dr. Gary Carlson