expectations

My parents have every high expectations for me. they want me to get straight A's and don't get in trouble. the perfect child. i don't know if i can be that person. my older sister graduated with a 2.9 gpa and she was homecoming queen and she also was the speaker at her graduation. i feel i have huge shoes to fill and my parents compare me to her and i'm not her. i don't get the perfect grades and i'm not miss popular either. i sometimes feel like i am a failure to them and i just want to crawl in a hole and cry. i just don't know what to do.