A belated congratulation then!
About what you're going to do with your life, I found that at least trying out, even if just a course, something that you really didn't have much of an interest in, but at least a little, might kindle one for real.
Psychology was my example: it was fairly interesting, though nothing I had a burning passion for, but since I've started a course in it, I'm glad I did.
If you have the option to begin lightly, then do so. It helped me at least.