Comparison really IS the thief of joy especially when it comes to social media. I'm sure it is no surprise that girls are prone to "social comparison and feedback seeking online" according to researchers. And they are finding that more social media comparison equals an increase in depressive symptoms.
From Rachel Simmons, author of Enough As She Is: "We can tell girls all day, as many parents already do, that social media isn't a representation of reality - that it's an illusion crafted by shrewd magicians of their own lives - but until a girl decides that social media can't be the barometer of her self-worth, very little will change." In her book, Simmons explains how parents can help their girls develop a healthier relationship to social media such as encouraging them to use social media as a way to connect & say something about themselves; to not use it to ask a question about what others think about her; to ask the "why" before she posts (why am I doing this? What do I want to accomplish?); and to have social interactions IRL (in real life) to experience the connection she craves.
If your girl engages in social media, have you found other ideas for how to stop the comparison game?