If you look up the word “overreact” in most dictionaries, the gist of the definition goes something like this: “responding to a stimulus with more emotion or behavior than necessary.” Given this meaning, there are two possibilities here. Either you have evaluated your response and decided that it was more than what the situation called for, or someone else has given you feedback that they think this is the case. Either way, if it’s apparent that your emotional expression or physical action did not fit the parameters of the context in which they occurred, and you want to react differently in the future, there are three things you can do in less than five minutes to install a new mental program.