Know what your strengths, weakness, personality quirks, and interests are.
Find out what courses are required for certain majors and what the career opportunities are for certain majors.
Talk to people who are specialists in the field you want to go in to like professors, career counselors, employers, and CRC's Career Center Specialist.
Come in to the Career Center to take the Meyers-Briggs ($12) and Strong Interest ($13) tests to find out which majors and careers best suit your personality!
Other online personality quizzes:
Schedule an appointment with a counselor, the morenob (at) crc [dot] losrios [dot] edu (career specialist), or meet with one of your professors in the major you are interested in.