Think about some disagreement or even just a less than pleasant discussion you may have had with someone.  The further back in time the better to start with.  

Does it still bother you? Was it something really that much of an issue?  Is it important today? Or have you moved on to other issues perhaps?  Was it even as bothersome the next day or did you cool off some. Or perhaps as they say was it overcome by events (OBE)? 

Remember that when you get upset or angry (and even just anxious) your frontal lobes shut down. When they stop working, you’re not responding with any logic or careful thought. 

Can you take that pause (from the two arrow concept- the pause between arrows) and wait before you decide how something is going to affect you? So what if someone cut you off in traffic? Do you really believe that the other driver intended to make you made and is a bad person? Of that you’re a victim all the time and that makes you mad? Is it worth that much to get so upset? What are you really upset about?  That is the key question.