Vogue Editor-in-Chief Anna Wintour on not comparing yourself:

You are driven by your heart, you’re driven by your talent, and you’re driven by your instinct. And if you start to question and look at what people are doing to the left of you or to the right of you, you are going to lose that clarity of thought. Listen to the information. In the end it has to come from who you are. Own your decisions and own who you are but without apology.