Need to lose weight?

I’m 14 years old, male, 5ft 9” and I weigh a whopping 15 stone. I’ve been fat almost all my life and I hate it so much. How can I lose weight quickly and effectively. I don’t really like exercising and I’m addicted to fast food and fatty, salty and sugary snacks. I really need help because I don’t want to get any bigger, but I can’t help myself from the temptation of eating.