My looks aren't good enough for highschool

so im 15 and im about to start highschool. i have never been pleased with my looks. Registration was yesterday and i saw all these other girls who were going into 9th grade, like me, and they were all perfect. There are so many gorgeous girls, it makes me feel like shit. I run 3 miles everyday and that does nothing. I have been thinking about going anorexic. it seems like thats all thats left to get the body i want. Running isnt helping me lose weight, and no guys are going to want anything to do with me so thats my only choice now. I just dont know how im gonna get through highschool being so insecure of myself.

it takes time to lose weight,consult a dietician and join a gym,dieting is bad,you will fall sick,be patient ,you will feel and look good if you healthy and happy.