Misinterpretation of things
See whenever a situation comes where someone say something very disturbing to us and instantly we react with burst of emotions which spoils our mood or whole day sometimes we also regret about our doing we all think we are rational but the reality is different more than 95 percent of us are irrational reacting continuously to external and internal stimulus. There is no fault of ours ,our brain is structured in a way that the part of brain where reasoning and logic happens is apart and far from the part of brain where cognition happens means language processing happens so whenever we react to a stimulus instantly we are not reacting rationally we are reacting emotionally so every time when you feel overwhelm from a stimulus then take a pause let the logic and cognition combine then react in this case there are high chances that you will avoid worsening your mood and day .
TL;DR: the intelligent person is who ,who understand the exact motive and meaning of someones comment or act and rationally react to it .not the one who thinks he is right and his perspective is the only perspective, open your mind wide for new and creative solutions to a problem. ( comment your opinions friends )