You probably have the typical movie college scene in your head, and although that might be how college is sometimes, that's not all you can expect, or focus on. High school and college are two completely different playgrounds. You have your whole life ahead of you. Your college GPA actually matters, so take it seriously. The adjustment is hard at first, but college is awesome.
Whoever tells you college isn't awesome is wrong. College is where you finally get to be yourself, start fresh and find yourself out. You have to look forward to going to class and you have to be driven. I cannot exaggerate that enough. If you're not looking forward to class, you're doing something wrong (minus general education classes...those do usually stink).
I f you finally start taking classes partaking to your major and you're not enjoying them, then take that as a sign that maybe that major isn't for you. "If you love what you do, you'll never work a day in your life." Don't study something that you don't enjoy, because then maybe you'll be stuck doing something you don't even like for the rest of your life.
Don't lose sight of your morals. People change in college, because the independence is overwhelming. You finally get to be you and do what you want. But your morals aren't something that should change. Mom and dad raised you right. You're an awesome person of God and I wouldn't want you (or anyone) to lose sight of Him.
Don't do anything stupid. Learn from my mistakes. I hope you know that you can always come to me when you need me. I'm always a phone call or a short three hour drive away. I love you so much. Have fun, but don't lose sight of all things good.