My wife writes a little, but reads a lot. One time she went back and re-read something she had written years ago, and came away thinking "I hate this type of writing! It thinks it's so damn smart!". Her takeaway was this: if you're in love with the way you phrased something, rewrite it.

Hey goal is to write a story with plot. Real characters. Arcs. As soon as she finds herself wasting time rolling sentences around her mouth, like toffee, with big fancy words, she is directly hurting the readers' flow. Sometimes it's nice to leave one or two, but in general you shouldn't try to be in love with every sentence you've written. But every sentence should move the story forward. Just tell the damn story. Because when you come back to your writing years later, it's those very stylish, witty, fancy phrases that will embarrass you.