So I'm studying psychiatry at the moment and I came across this disorder that is pretty interesting. Have a read:

Individuals with narcissistic personality disorder generally believe that the world revolves around them. This condition is characterized by a lack of ability to empathize with others and a desire to keep the focus on themselves at all times.

Narcissistic Personality Disorder involves arrogant behavior, a lack of empathy for other people, and a need for admiration-all of which must be consistently evident at work and in relationships. People who are narcissistic are frequently described as cocky, self-centered, manipulative, and demanding. Narcissists may concentrate on unlikely personal outcomes (e.g., fame) and may be convinced that they deserve special treatment. Related Personality Disorders: Antisocial, Borderline, Histrionic. Narcissism is a less extreme version of Narcissistic Personality Disorder. Narcissism involves cockiness, manipulativeness, selfishness, power motives, and vanity-a love of mirrors. Related personality traits include: Psychopathy, Machiavellianism.

Narcissists tend to have high self-esteem. However, narcissism is not the same thing as self-esteem; people who have high self-esteem are often humble, whereas narcissists rarely are. It was once thought that narcissists have high self-esteem on the surface, but deep down they are insecure. However, the latest evidence indicates that narcissists are actually secure or grandiose at both levels. Onlookers may infer that insecurity is there because narcissists tend to be defensive when their self-esteem is threatened (e.g., being ridiculed); narcissists can be aggressive. The sometimes dangerous lifestyle may more generally reflect sensation-seeking or impulsivity (e.g., risky sex, bold financial decisions).

Narcissists also exhibit blaming behavior, whereby they attribute their problems to an external locus of control, or "out of their control". Narcissists will commonly attribute blame to others for their own short-comings and difficult circumstances.