Go to class.
Be careful with who you give your heart to, both male and female. Make people earn your trust.
Spend as much time with Mom as possible. Go home to visit more often.
DON'T use the credit card to pay bills or buy that item you don't need. In fact, just don't apply for any, especially not just so you can get the free football T-shirt.
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That's probably about it. I'm thankful for my experiences because they've made me who I am today. However, in some cases, I probably didn't need so much experience!