5) When in doubt, choose the path that keeps the most doors open
If you're like most students, including me at that age, you have no idea what you want to be when you grow up. In cases like this, try not to narrow your options. Sure, take the boutique courses. But stick to mainstream majors, ones with plenty of options at the end: the sciences, history, economics, politics, and so forth.
Take the classes that are the basis of social and natural science: statistics and math.
Plenty of courses in the humanities are also building blocks. With the right professor and syllabus, a history or political theory class will teach you to argue, think, and write. These take more searching, but they are there at every university.
Other basic building blocks might be computer science and, as I mentioned above, writing.