Shoulds are a kind of [[Distorted thinking]]. We have a list of ironclad rules about how we and other people should act. People who break the rules anger us, and we feel guilty if we violate the rules. The rules are right and indisputable and, as a result, we are often in the position of judging and finding fault (in werself and in others). Cue words indicating the presence of this distortion are should, ought, and must.