the myth of Narcissus is used today to describe a great defect in human nature how?

A Narcissistic personality disorder is a personality disorder in which people are completely preoccupied by their own power, achievements, good looks, no lack of self-confidence, intelligence, and success.

The story of Narcissus in Greek mythology tells us of a man who fell in love with his own reflection while gazing into a pool of water. He spent hours at the pool where he "lay gazing enraptured into the pool, hour after hour." The fact thay his love could neve be consumated and his refusal to leave the pool eventually found him turned into a flower. His obsession describes the disorder listed above.