" The intercommunication system also includes the expectations and demands that people place on themselves and others—something that has been labeled “the tyranny of the shoulds.” 2 It is important to recognize these injunctions and prohibitions because rigid expectations or compulsive attempts to regulate the behavior of others are bound to lead to disappointment and frustration. "

― Aaron T. Beck , Prisoners of Hate: The Cognitive Basis of Anger, Hostility, and Violence