First, forget high school. You know what we mean. College is a whole new ball game. Subjects you hated senior year might turn out to be completely different in a brand-new time and place. Mind-numbingly boring civics might suddenly come alive; tear-your-hair-out calculus might suddenly become crystal clear and beautifully illustrated by the physical world around you. In other words, don't automatically rule anything out, even if you don't think it's for you. Give everything at least a small chance. You never know.
Now that you're open minded, take advantage of some of the general education…
