" Some narcissistic leaders are models of icy reserve while others have the emotional self-control of a two-year-old. … the essential narcissistic defect is not something people generally outgrow. In fact, narcissism may become more entrenched with age and expanding power. To the extent that power becomes more secure, the moody Narcissist may have more insulation from the shame that is the principal regulator of bad behavior. The more powerful you are, the more you can get away with. . . . Such people never developed the ability to calm themselves, and their unrealistic expectations and need to control what is often uncontrollable can keep them in a constant state of agitation.
If you and others feel you must walk on eggshells to avoid setting off a landmine, suspect underlying narcissism and tailor your responses accordingly. "

― , Why Is It Always About You? : The Seven Deadly Sins of Narcissism