Your father is a physically and emotionally abusive psychopath. Unlearn everything he’s taught you, and don’t listen to another goddamn word he says. If you start lifting weights now, in about four years, you’ll be able to wait until he goes to hit your sister with a belt, and then you can take his ass down with a frying pan. What’s he gonna do, call the cops?
On that note, those shitty little farm towns you’ve been forced to move into every couple of years? That’s not the real world. The real world is actually light years better, as long as you have goals, a sense of humor, and some disposable income. Work’s not nearly as bad as everyone around seems to think it is, plus the orgasms are out of this world.
I wouldn’t go so far as to call your teachers and principals morons, but you should realize that the reason they’re teaching in a shitty little farm town has less to do with some sort of calling and more to do with a lack of options and goals. Be nice to them, but realize that they’re going to be pulling their hair out over kids like you in the same school and the exact same frigging stuffy room years after you’ve forgotten their names.
Straighten up. Don’t worry about the grades to the point of obsession, but you should be learning stuff on your own. Work ahead in your math and science books.
Don’t worry about what you’re like now. You cannot begin to imagine how much better your life will be 25 years from now. Your life is shit now, and it’s going to be shit for eight years to come until you figure some stuff out, but once you’ve figured it out, life will be fine. Just remember not to be bitter or start hating the world. That’s its own hell. Keep seeing the humor in everything, and remember that when the bad days are over, they’re over. No emotional baggage, OK?
Yeah, basically, I’d tell myself not to take things too seriously. Life at ten is not life at thirty, and for me at least, that’s a good thing.