To get beyond our feelings of anger towards another person one simple thinking technique is to use the virtue of empathy and understanding. Empathy and understanding do not require that we agree with the other person. However it does mean that you are listening to them, acknowledging them, and are willing to discuss the two points of view.
Just asking yourself what the other person is feeling right now is a good first step. They may be afraid of losing something that is important to them or they physically be tired, sick or anxious about another event. All of these could create a response that does not fit into what we would like or expect.
You could also then ask, What is really important to them now. It is possible that some world affair is on their mind and they may have very strong view that do not fit the way you are thinking. But if it is important to them they may express themselves strongly wanting to be heard and understood.
Finally ask, How they are viewing this situation. They may see or hear this situation as a confrontation and it may not be so in your mind. Keeping in mind how they see or feel the subject at hand gives us insight into where the person’s point of view is coming from.
Using our empathy skills is a fundamental way of helping us be less angry.