First, I agree with Stephen. Strength Finders 2.0 is a great book to help you discover your core strengths.
Second, think about what you are passionate about. What do you want to learn more about? What interests do you have?
Third, as others stated, don't stress too much about it. This is a great time to do internships and discover more about companies that you are interested in to learn about their culture. There are several people who are now in a career that they didn't start off in. You have the tools (Eg: LinkedIn) where you can easily reach out and connect with people. Perhaps even find a mentor.
Also be patient. Even if you don't start off in a position that you love, you can always learn a skill that will likely be applicable in your next career move.
Best of luck!