Narcissistic personality disorder
You may:
believe that there are special reasons that make you different, better or more deserving than others
have fragile self-esteem, so that you rely on others to recognise your worth and your needs
feel upset if others ignore you and don't give you what you feel you deserve
resent other people's successes
put your own needs above other people's, and demand they do too
be seen as selfish and 'above yourself'
take advantage of other people.