How can a little anger be beneficial to someone?
When you have anger that is temperate and not excessive, you are showing yourself and the one who offended you that you are a person worthy of respect. You are showing the other that you are aware that he or she was unfair to you and so you are giving him or her a chance to change. Excessive anger can consume your energy and your happiness and destroy relationships. Anger within reasonable bounds and expressed reasonably is good and should not be suppressed as something bad. I am presuming that such anger is short-lived when I use the word “reasonable.”