Identify the type of narcissist you are dealing with. Researchers categorize narcissists into two categories. Grandiose narcissist and vulnerable. Grandiose narcissists have high self esteem, believing they are better than everyone else. Vulnerable narcissists have low self esteem that they are compensating for. To deal effectively with a narcissist, figure out their back story, create a healthy boundary, recognize toxic behaviours and abusive signs.