Comparison is one of the fastest ways to lose a sense of your own identity, because it quietly replaces “who has God made me to be” with “how do I measure up to her.” The second question has no stable answer — there is always someone further ahead, and always someone who makes you feel further behind than you actually are.
“...we dare not class ourselves or compare ourselves with those who commend themselves... measuring themselves by themselves, and comparing themselves among themselves, are not wise.”2 Corinthians 10:12
Paul's word for this is blunt: not wise. Comparison isn't a minor character flaw to manage quietly — it's a genuinely unwise way to evaluate a life, because it uses the wrong measuring stick entirely. Your calling was never assigned relative to anyone else's.
This is where identity has to come before calling again. A woman secure in who God says she is can genuinely celebrate someone else's calling without feeling her own diminished by it, because the two were never in competition to begin with. Comparison only has real power over an insecure identity.
A practical test: when you see someone else's success, does it make you curious about your own path, or does it make you feel behind on it? The first is healthy inspiration. The second is comparison doing its usual work — and it's worth naming directly, not just pushing past.