Linda Ann’s Answer
Undergraduates seldom "specialize" in a sub-discipline of psychology, because there is a lot of other coursework that needs to be completed in order to finish your degree that are unrelated to the discipline of psychology. Specialization happens in graduate school, following completion of your BA or BS.
So, I'm going to put a question or two or three right back at you: why are your interested in psychology? What do you want to do when you've completed your degree? In other words, what is your passion? What drives you? You may not have the answers to these questions yet...after you've taken several courses in psychology you may be in a better position to answer the questions that I've posed here!
Many high school students think that psychology is only about therapy or counseling. You obviously know that it's not just that. Explore further at the website of the American Psychological Association: www.apa.org. Go to the tab for "divisions" (there are about 54 of them)...so there's lots to read. This might give you a better idea of what you might pursue in a graduate program. But do take some courses first, before deciding - you might be surprised and find out there's something that you really love. Follow your passion, do your best work and the universe will support you in your dreams.
Industrial-Organizational Psychology has been "in demand" for some time now. Go to Division 14 at the APA website to learn more about what we I-O psychologists do.
Best of luck.