“People aren’t just people, they are people surrounded by circumstances.”
– Terry Pratchett, I Shall Wear Midnight
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The fundamental attribution error basically say that we usually blaim a person’s personality when they do something wrong, but for ourselves we always have a good reason for doing what we did. Our behavior is a function of both our internal characteristics and the external circumstances. I believe that people want to do the best they can but sometimes they have been put in a situation where no matter what they do they will fail at one of the things they are doing. This stress they will most likely take out on the people around them.
If one of your colleagues are always irritated or angry at their coworkers. It is more likely that they are extremely stressed and have been put in an extremely hard situation for a long time, and not that they are a psychopath.
If you are the manager of a really stressed and angry person try to find out what makes them stressed and then help them either prioritize or removing the misalignment in their goals.
At the same time if one of your colleagues or friends have an extreme amount of energy and happiness. Try to learn from their circumstances: What people are in their life? How do they sleep? What do they eat? How much do they work out?