Exercise and Weight Loss

So, lately I've been trying to lose weight. I've hit all the bases, eating healthy, eating less, plenty of exercise. I've completely got the exercise part down. I play baseball, tennis with my school, I go cycling just about every day, and I'm about to start Capoeira (Brazilian martial art) classes. I just COMPLETELY SUCK with dieting. Makes me not know what to do anymore. It sucks! I keep trying, but I always fall back into overeating. Ahh. . . If I could somehow get rid of my natural teenage boy hunger. Hahaha. What can I say? I love food! Well, somehow, I'll find a way. I'm quite tall, and I keep growing, that always helps. We'll see, maybe I'll order the P90X videotapes my friends Everett always tells me about. They seem good, lose a lot of weight in 90 days. He says it works, I'll take his word for it. Any suggestions?