Comments: The line between the two is so fine that it often becomes difficult to define. One leads to the other and vica versa - often times in actual conjunction to each other. My opinion is that narcicism is the worse one, for a person with self-denial can be carefully guided on the road to self-appreciation without the risk of becoming narcicistic. It is far more difficult to guide a person off his/her self-proclaimed pedestal. In my experience, narcicists will have difficulty arguing logic, for their premises are mostly based on their own perspective, rather on reality. A person in self-denial can be shown the route to reality/real-perspective. Narcicists, for the true meaning of the word, has difficulty to admit the fragile/fake/self-conceived nature of their perspective.
It takes someone honest enough to help you realize you may be narcissistic. Most of us will not readily see how we view things because we are looking out and not looking in. Its kind of like putting on weight. You add on a little at a time and before you know it you don't see how fat you've become.
I've always wondered if a narcissist is aware how they come across to other people. Maybe they really do not care because in the process of praising themselves it is like a drug to their self esteem.
The two are bad but the narcissist is particularly annoying because their focus is what matters the least to other people.