Oh man, your life is hard! You have to pass classes AND struggle with a debilitating game addiction? Grow the fuck up. I'm your age, and I sit on a computer for >7 hours on a weekday. I'm not a virgin, have an active social life and do well in school. Want to know how? It's quite simple really. Stop making fucking excuses. Start DOING your fucking homework, your academic life takes first priority over everything at this age. Don't say you'll do your homework after you finish a game, just get off your ass and do it. The fact you're starting a thread here only confirms my theory that you're hungry for attention.
I've got friends the same age as you and I that have overcome a speed addiction, and you're here complaining about your addiction to video games? Seriously? If you can't find the ounce of motivation required to not absolutely fuck up your life by not passing highschool then you have some sort of psychological condition. Get checked for ADD.
-Stop pretending video games and anime are a real problem. Toughen up.
-Do your homework. Study. Submit 2-3 drafts on all assignments.
-Make friends (I have a feeling you don't have many real life friends). Get a social life. Communicate regularly in person.
-Pushups and jogging. Jogging especially burns cortisol, a chemical responsible for stress. Balance your school, exercise and social life with your stupid games.
-Get a job if you think you can handle it. Holy shit, do this and your life might go somewhere. Save up some money for university. Make a budget.
C'mon dude. Your life isn't difficult, it's easier than most by the sound of it. Stop being so angsty and do some god damn work to improve yourself.