Hi Moonlight. Welcome to 3FC.
Probably not what you want to hear, but along the same lines as everyone else has said, it doesn't seem to me that you have much if any weight to really lose. But I'm sure you don't want to GAIN any either, so it's defiintely a good idea to add some healthy habits, lifetime habits, into your everyday life.
It's also a little hard to give you advice how to change up your diet, because we don't know exactly what it is you're eating now.
Perhaps you just might want to focus on making some good, healthy choices in the food area. Try to cut back on fast food and pizza. Add some fruits and veggies into your daily day. Drink skim milk and low fat dairy products instead of full fat. Try and avoid the cookies, cake, ice cream and chips. I know how HARD that is, especially while around other teenagers, I've got three of them myself. I also try to never "drink" my calories. That means avoiding shakes and sugar laden sodas and those coffee drinks.
Maybe you'd like to start exercising a little, bike riding, roller blading, basketball, tennis. MAybe take a yoga class or some kind of dance class. Find something that you enjoy and are comfortable with.
Once you add in some good, healthy habits and get used to doing it, you will no longer "forget" that you are actually "dieting", because you're not really, you're just making wise choices.
