is there something wrong with me?

i feel like there's something wrong with me. i keep thinking to myself that i have so many problems. i have so much acne and i have a bunch of scars left now. i want to get rid of them and be that beautiful girl i've always dreamed of being. i want to leave my butt length hair down to school but instead i've worn it up in the same ponytail for four years. only my closest friends have seen me wear my hair down. i don't know why. am i afraid of compliments? im afraid to wear new clothes because i don't want people to say anything so i wear good but lame in my perspective clothes to school. i want to be that amazing girl with an amazing personality that everyone just loves and everyone knows. not popular. just amazing and knows everyone. but i feel like i can't be. i feel like that spots already taken by someone else. i got a new desk without asking for it. and i hate it. i wanted it at first but now every time i sit at it i get angry and i don't even know why. i just tell my mom i don't like the desk. my parents are the best in the world and im so fortunate but i never show it. i can never act myself around my parents even though they're so nice and supportive. i feel like im hiding my true self from the world. i can't even tell my mom i love wearing dresses and skirts because i haven't worn them for such a long time. she even called me a tomboy once and smiled so i went along with it. i don't know. whenever they ask me what im doing i hide it and say im doing nothing to the extent they suspect me. i used to be an all a student. now i have one c (which i can bring up but still) and all a's. i feel like i've degraded myself. my willpower's completely gone. i break down crying for no reason at all. i feel like i have so much on my head when i don't. i don't even know. i keep going on the computer and wasting my time and i can't just get my work done and over with. im losing sleep, my temper, and my love for my loved ones. im only a teenager. i feel horrible. im not on drugs and i've never done any sexual activity. im a good kid. i just don't know what's wrong with me. i feel like im the only one going through this sudden failiure in life but i just feel like crap. everyone i know likes me and i have a good life. i just don't know how to get through this. why can't i just get my work done! i can't even motivate myself or tell myself i HAVE to do something anymore. i always put everything off until later and that messes everything else in my life up. HELP.