Yeah I've seen this guy before. Sam Vankin.
The thing is Sam is a psychopath not just a narcissist he has spent time in prison wrote, a book etc.

I, Psychopath - Top Documentary Films

Psychopaths can be self aware, psychopaths can admit fault (they just don't give a f##k) A true narc NEVER admits fault. They lie, lie, lie.

I do not know any narcissists that are self aware. To suggest to a NPD they are anything but perfect will lead to RAGE.
I believe narcissisum is a PD you are born with. A narc is 'wired differently'

However it is possible people with narcissist traits, learned behaviour (from parents) can be aware and seek help.