It is natural to feel angry at times. As the Mayo Clinic explains, anger is a natural response to perceived threats. What you do with your anger is what is important.
For some, stopping your anger is what is important. Some but not all. This piece argues that anger can be a public good. On the other hand, this article compares it to a form of madness that needs to be curbed. Certainly if you have kids, especially kids with severe difficulties of their own, knowing how to regain your sense of calm (as this pieces shows) is important.
My personal view is that anger is like a fire, and while fire has its uses, it is generally someone you want to contain if you don’t want to cause major damage to yourself and others. It is worthwhile to examine what you perceive to be a threat and try and break it down and determine if it really is a threat. Often the things we fear are not as threatening as we imagine. Plus sometimes we feel that way because we are tired or feeling isolated.
The last piece I want to recommend on anger is this piece in Zenhabits.
Smart People I Know 