I know this Wayne Dyer quote is much easier said than done but it is worth the practice to make it an easy thing to do. This is very similar to the Buddha story I have heard.
The Story of the Angry Young Man and The Buddha
It is said that one day the Buddha was sitting and meditating when a very angry and rude young man came up and began insulting him, saying all kinds of rude words to try and get the Buddha upset.
The Buddha was not upset by these insults and waited until he was finished then asked the young man, “Tell me, if you buy a gift for someone, and that person does not take it, to whom does the gift belong?”
The young man was surprised to be asked such a strange question and answered, “It would belong to me because I bought the gift.”
The Buddha smiled and said, “That is correct. And it is exactly the same as your anger. If you become angry with me and I do not get insulted (accept the gift), then the anger falls back on you. You are then the only one who becomes unhappy, not me. All you have done is hurt yourself.”
If you can master this you will find a much more peaceful life and not only that you will bring peace and calm people down around you just by being in their presence.