Way before the first selfie, the ancient Greeks and Romans had a myth about someone a little too obsessed with his own image.
In one telling, Narcissus was a handsome guy wandering the world in search of someone to love.
After rejecting a nymph named Echo, he caught a glimpse of his own reflection in a river, and fell in love with it.
Unable to tear himself away, Narcissus drowned.
A flower marked the spot where he died, and we call that flower the Narcissus.
The myth captures the basic idea of narcissism, elevated and sometimes detrimental self-involvement.
But it's not just a personality type that shows up in advice columns.
It's actually a set of traits classified and studied by psychologists.
The psychological definition of narcissism is an inflated, grandiose self-image.
To varying degrees, narcissists think they're better looking, smarter, and more important than other people, and that they deserve special treatment.