After I graduated high school, I backpacked through Europe with my twin brother. Then I spent the rest of the year at a non-academic boarding school in Norway, where my "major" was skiing and we went on trips to Austria, Spain, England...it was a killer year.
Some people look down on gap years (and those are the people that think there's a set path from the moment you enter kindergarten til the day you die) but if there's any advice I can give to someone, it's take time to travel. Learn about yourself, do things you wouldn't normally do, eat all different kinds of food, talk to strangers, write, read, look around, discover, and be thankful.
Learning these things helped me prepare for college. Don't go somewhere or do something just because someone is telling you to, be in control of your own life. Do your own thang.