Some great advice. If you treat college as another means to an end, you might become exactly what you wanted to be when you were 17. Interesting people I know all agree that their 17-year-old self couldn't know what their 25 or 30 year-old self wanted.
Therefore, the best path is to get good grades, learn about what interests you and otherwise, just concentrate on becoming your older self well. Sometimes the order of those three is not as important.