<p>Here is a neat trick a Cal academic advisor told my son to try: Buy a big course catalogue from the book store and keep it by your bed or wherever else you spend free time. Every so often, open the catalogue to a random page, look through a few pages and highlight classes that sound interesting to you. Over the course of a few months, you may notice that you have more (or less) interest in certain majors and can choose classes accordingly. My son definitely excluded a lot of majors that way. Business is one example: none of the classes in that section ever ended up being highlighted!</p>