"Narcissistic personality disorder, often mistaken for a too-big ego or inflated self-esteem, is in actuality a severe psychological condition that ruins marriages, social relationships, work environments, and often your own sense of self. Although many narcissists may be perceived as self-confident and arrogant, if you suffer from this disorder, you may fall victim to devastatingly low self-esteem and insecurity. ... [W]ith an exclusive section on the epidemic of 'net narcissism' due to social media"--P. [4] of cover.