Jennifer Lawrence Takes a Polygraph Test!

If you knew the first thing about how science works, you'd know that anecdotes are never reliable scientific evidence for anything under the sun. People are self-deceptive and extremely unreliable, and the scientific method is actually nothing more than a series of practices to combat the basic unreliability of humans and how they arrive at their beliefs.
First of all, Lawrence is forever making exaggerated, hyperbolic comments and you are just being ridiculous taking the comment about narcissism literally. Nevertheless, she does have a point about belief in the afterlife persisting despite a complete lack of credible evidence being due to the cognitive flaws of human beings. She's actually expressing an opinion about the origin of religious belief generally that is entirely mainstream among scientists who try to understand where religious beliefs come from.