Comparison is a killer. It kills your joy, it kills relationships, it kills marriages, it kills your purposes in the world. Why? Comparison is an open admission to God that you’re not happy with who He made you to be, and you wish you were like someone else. There may be something called healthy competition, or challenge to grow stronger, but the negative side of challenge is comparison. Don’t compare yourself to others, it leads only to pride, or to resentment.
The Death of Contentment