My First Step in Life

I am a 18 year old senior who has just recently been accepted into college. This totally scares me. My college is 12 hours away from home, and this is what makes me scared. I have never been away from my family for a long period of time and I feel as if I'm not going to succeed. I don't quite know where this doubt or feeling is coming from but I just feel weird. This is my actual first step in life and I feel like a child or a lost ball in high weeds. I live in Milwaukee and i'm going to college in Little Rock. i know no one down there and I'm going to be by myself I feel really overwhelmed by this step.