I am just so done with all this

I am 16F, and I have always been insecure about myself in everything. I am not pretty like my sister , I am not talented enough like my sister, I am not intelligent like my sister ....I just hate it ...I just hate myself. I think I can't do anything.My sister (21F) is very good in everything . She is now in NIT, and my parents are obsessed with her.They always taunt me and say, "Look at your sister, and you can't do anything well." My mom always praises her . My father was not like this, but after she went to Nit, he also became like this and started to pressure me . I thought that I could do something in my studies and was very confident in scoring above 95% in 10th boards, but I only scored 93% . I was very disappointed and sad.I started to really hate myself more . I used to cry so much (alone in my room ) and was so depressed... When the results came, my parents didn't say much and were just disappointed. But after some time, they started to mock me.Like when I used to take a short break after studying they would say "now you are not studying and then you'll cry like you did when your result came, when you don't get any good college " I used to score good marks in my studies, and my teachers always appreciated me, and for them, I was a good student. But for my parents, 90% is a failure. The good thing was the highest percent in my class was 95.3 % . So they didn't say much.

PEOPLE think that mocking and taunting and commenting and making a person remember about their past woe will make them encouraged .Because that's what my parents are doing. AND.... Wow ...that DIDN'T WORK on me. They think that they are being good parents but they don't know what they are doing really.
They think that mocking me everyday ..everytime ...comparing me to my sister...will make me very encouraged..

Next year is my JEE, and I am really scared that if I don't do well , everyone will hate me, and I won't be able to do anything in the future. I am so ....scared ...I don't want to live like this...