I like this story about how Buddha interact with an angry man and not affected by his insulting words. From my workplace, I see a lot of suffering because people are easily affected by what others say and thus they kept thinking about the unhappy thoughts. I just ignore and just asked the person who is rude to me who is the first person to hear what he/she said. They would say themselves first then I would ask why would they want to insult themselves first and they just kept quiet.
In this story, as Buddha was walking in a village, a very angry man insulted the Buddha and said that he had no right to teach others. Buddha was calm and serene as usual and he asked the 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 with your anger. If you become angry with me and I do not get insulted, 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.”