Every once in a while you have a chance to be nice to someone who doesn't deserve you to be nice. But be nice anyway. Whatever is the reason for you to be rude, angry and upset, try and not be that. It is easy to be rude but difficult to be nice.
Once I was in a traffic incident where both the drivers were at fault but were shouting at each other in frustration. I couldn't stop wondering why they were doing it. All there were few scratches and both weren't even bothered about the financial damage but were adamant on proving their point of being right. In life when we have situations like this, make sure you be nice and move on. After all we are all covered by insurance and the amount won't matter to anything. Things could be solved by simple reasoning and discussion. It is less frustrating to be nice and simply solve the problem. Anger and being rude never helped anyone.
I am not saying it is an easy job to be nice, but we should try and be. Being nice is a virtue we can all benefit from.
Pic is from here. #AtoZChallenge