Earlier quoted context omitted.
Sorry but no. This will not fix narcissism. Narcissists are broken people incapable of self-reflection and everything centers around them. They see everything in the world as being put here for their enjoyment. They thrive off of attention (negative or positive) and it's the only time they feel alive.
Your definition is so simple. So clear. So absolute. Nearly everyone is capable of self reflection. To think that an individual is categorically incapable of it is to deny them their humanity.
it has dumbfounded me at times because I, as you, thought everyone has some sense of it and if they saw it they might change; but alas not always the case