Mark Goulston is a Founding Member of the Newsweek Expert Forum and a Marshall Goldsmith MG100 Coach, who works with founders, entrepreneurs and CEOs in dealing with and overcoming psychological and interpersonal obstacles to realizing their full potential.

He is the host of the My Wakeup Call podcast and was a UCLA professor of psychiatry for more than twenty years and is also a former FBI hostage negotiation trainer. One of his many bestselling books is Talking to ‘Crazy’: How to Deal with the Irrational and Impossible People in Your Life*.

In this conversation, Mark and I discuss some of the key principles that are effective in diffusing difficult or irrational behavioral. When that behavior is coming from someone who seems to be a know-it-all, we explore three steps that will help you guide them towards better behavior.

In his book, Mark writes about know-it-alls:

They don’t say, “People think I’m a jerk, and I need to change my behavior.” Instead, they say, “People dislike me because they’re stupid and incompetent.” This convinces the know-it-alls that they need to double down on quashing the spirits of their victims.

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