james, I'm an ole man. I'm 59! I learned a long time ago that a balanced life can be a very satisfying and happy life. also very productive, when we keep our priorities straight. at your age, sleep, school, family, exercise, your faith, friendships, health, eating, and entertainment are all high priorities! perhaps if you will time yourself to maybe 30 minutes a day on u-tube may be the answer. try this and see how it works out! my best wishes!! stay safe and make it a great 2013...:-)
I wouldn't consider that an addiction but if you wanted to cut down on the time you spend on YouTube or even just the Internet in general, u could do one of a few things. Try to find something else to kill that free time you have. Get involved in something you enjoy doing after school. If you wanted to take drastic measures you could just have your parents block YouTube on your Internet. Good luck to you.