If you have a narcissist in your life, you’ve likely found yourself being treated like a yoyo—narcissists will do whatever it takes to suck you in, and then, once they’ve gotten all they can from you, ...

Emma Lembke joined Instagram when she was 12. The last of her friend group to sign up, she had sensed the appeal of the app in the gazes of friends; people who used to look at her now looked at their ...