By the time you're in college, you should know where you're going to end up.
That should be figured out before you get there, so you know which classes to take and who to talk to.
Of course I'm in an enrollment plan, but they only get you into the broad spectrum of what you can do with the knowledge gained in college.
By the time finish my base course I could excel in any many fields regarding my major.
It's not like you go to college to become one thing.
You can never know where your going to end up, you can only know where you might want to be.
Worrying about that at 16 isn't worth the headache.