Advice for a freshman!!!

<p>Hi,
Okay so I'm 14 and I live in NC and my name is Zachary. I am currently in my second six weeks of high school and am kinda worried. My goal is to one day attend UNC. I know UNC is a public ivy, and one of the hardest schools to get into in the state, but I feel like I can do it. Anyway I kinda f'd up 1st six weeks and got a 3.2 un-weighted GPA, and 3.75 weighted. I realize this sucks. And i'm hoping to bring it up to a 3.75+ un-weighted, and a 4.2+ weighted. Also I'm in the marching band and it takes over my LIFE! I have like no time for anything else, and it's just a lot of pressure. Anyway currently I am in marching band, FBLA, and soon will be in voyagers club. Anyway what things should I do starting NOW to one day get into my dream school?
-Thank you so much!</p>