How to loose weight at 14?

Well Im 14 and about 160 lbs and im like 5'8' i really need to loose weight and ive tried just about everything..i thought about anorexia but i just cant do that to my body i feel lke it would be stupid..but i cant get my weight off my mind im constantly thinking about it. is there anyway for me to loose weight really fast i jut dont have the patients.helllp!