I can't become motivated to lose fat, even though I really, really want to. Help!

I can't become motivated to lose fat, even though I really, really want to. Help please?

I am 13 and I have a big belly. I want to turn it into abs and I want to get bigger arms and legs, in a muscular way. I play football and I want to lose my body fat (19%) and turn it into 12% by the end of september. And I want a flat stomach by August 8th. My belly doesnt come out near my ribs but below it. I have a big chest to, but they are not man boobs. how can I get motivated to change this and lose some weight and what are some training tips. I am choosing a best answer, if you care about that. God Bless you.

First of all dont listen to the girl above me you can do anything you set your mind to! Okay buddy I was like that once, wanting to get into shape and play football I got a personal trainer 2 years ago and stayed with him,. But thats what you need a good personal trainer. tell him your goals and he will get you where you need to be, But get one as soon as you read this, Because personaly I would be like yeahhhhh and then forget. Good Luck ! let me know how it works out.