What’s The Difference Between Self-Confidence And Narcissism?

In the 1990s, teens were learned things that turned out not to be true. “Self-esteem would keep us from doing drugs, teachers told us; self-esteem would keep us from having premarital sex. (The first time I had sex with a confident stoner, I was very confused.)” But what is self-esteem? And how is it different from narcissism? – The Atlantic