I really need some help please?

I am 14 and a guy. I just have a fat belly. My stomach is pretty wide and large. It sticks out. For Some reason, none of my other body parts are fat, just my stomach. Why is this? I play hockey, but i eat a bad diet. How can i prevent myself from eating junk food? Also, what are some workouts that i can do at home to get rid of my belly fat and get six pack fast? I want home workouts please, because it's snowy and at least -10 where i live. Please help.