Demokan,
you tried to overdose on Tylenol PM? That's alarming. I think you need someone on your side, you're surrounded by people who don't think the way you do, and who have power over you. Start looking around for a trustworthy non-JW adult you can talk with. For me, when I was in high school, it was the librarian. We didn't talk JW stuff, but she gave me a lot of books to read. She was pretty smart, books about language and how it can be used to manipulate, about the brain and how it works, about the modern world, political issues, history. Lots of stuff to make me think.
For instance, she had me read Language in Thought and Action, by S. I. Hayakawa. It has been around a long time, but the info is still very interesting and useful. I'm sure there are more modern books on the same subject. You might also want to read another golden oldie, Games People Play. You'll recognize a lot of those games at the KH. I also think everyone needs to read The Gift of Fear. It's rather scary, but it lists ten behaviors that tell you someone is untrustworthy. It's worth learning to recognize those ten behaviors. You'll see them everywhere, and you'll start to discern who is trustworthy and who isn't.
The library might not work for you, but if you'll keep looking you'll find some adult who can relate to you and be on your side.
Also, have a plan. You're stuck at home and going to the KH for now. What things can you do in the next three years that will make your future life better? The boring one is to get good grades at school, yet it is really important. Also, can you get a part-time job and start saving money? Can you learn job skills - maybe learn a skill that you can use to earn money while you go to college?
That's my two-cents-worth.