How will I find out what career I want to take?

I'm 14 years old, high function autistic. I'm not quite sure what of what I want to be when I grow up. I know I want to go to university at UBC in Burnaby, but I am not quite sure of what career path I should choose. I think I want to be a teacher, but I'm worried about interacting with the kids. What career might be good for me?