One of my favorite scenes from any movie comes from the original 1993 movie ...
Anger is an emotion. Anger is not a sin. Anger is not something we can eliminate from our lives. Anger, like any emotion that we may experience, should be properly controlled and managed so that those emotions and feelings do not result in improper behavior and actions. Being angry for a long period of time will not only eat at our own character and attitude, but it pours out into our behavior. Unfortunately, justifying our anger is a natural human response. It is very easy to find a reason that our anger is "right". Sure, there are times when we are angry and soon after we quickly identify that we were impatient or even "hangry" and then feel bad about that anger. Unfortunately, more time's than not, we find a reason that our anger is the right way to react to something or someone. And then, that anger leads to incorrect behavior and actions. Or, our anger causes more destruction to us, in the form of bitterness and resentment, instead of on the focus of our anger. Identifying our anger and then taking time and putting in the effort to understand why we are angry will help us to properly address the anger and not allow anger to lead to improper actions.