Have you ever had a power struggle with a child before? Your answer for peace may lie in more than just having a certain atmosphere of authority. You may be lacking the respect of boundaries. Find out how important it is to set boundaries.
Your children do look up to you, whether you think about it or not. It's important to think about your own actions because eventually they will be replicated, and sometimes even amplified, through children.
Do you have challenges with children in your classroom? The answer may be easier than what you think. It will take some effort though.