Anger management

Am I supposed to get angry at being stood up, or am I supposed to just take it as another thing that happens and save my heart in the process? Anger is an emotion that triggers complex reactions in the body, physically and mentally. And usually they are not positive ones. I will not elaborate on the cause, but I am trying to intellectualise the event (or I guess a non-event in this case I suppose). It happens at the most unexpected of times. I just hope there is a reason that justifies it. Oh well, let me be positive this time. At other times I might prefer to raise my heart beat rate. Thanks to someone, you would know who you are :), for saving my heart from stress this time.