What is the price of being perfect?

I don't know what it's like in your house, but here in mine your value is decided by your grade or your success. I've always been compared to my sister, she works in a good company, has financial independence and other things... My mother loves to show how perfect and tireless she is. Ever since she was in school, she was always the best in her class, but what about me? I always try my best even though I'm tired of comparisons, but my grades will never compare to what my mother wants. So... what's the price of being perfect? Do you compare yourself all your life and exhaust yourself for a little attention? I don't know, but I think this way of thinking is very wrong. In the end, it became more about me than a criticism of people's way of thinking.