Without reading neither your post or anyone else's, my advice is to work hard in highschool and get good marks. I didn't, and at the time, I didn't give a fuck. I didn't know what I wanted to do, and didn't really care. Now, several years later, I've grown up, finally know what I want to do, but I have to do everything the long, hard way because I fucked around in highschool.
Be a fucking nerd, the people that make fun of you for it you won't even talk to after highchool anyway.
God I sound like a parent...