Have an Answer?
I think the best way to figure this out is to start shadowing different people in their careers. Think about careers that you would like to do. Once you have your list, call different companies to see if they would allow you to shadow them for a day (yes, a whole day if possible). Staying there for an hour probably won't give you a good idea as to what is going on day in day out.
There is also a test - cannot recall the name of the test as I took in high school - that will ask you a series of questions to determine what career you may like. Ask your school counselor about this test.