What to do? Well most jobs are either easy and boring or incredibly difficult and rewarding. I think I wil go for the stimulating, high stress option. I hate repetitive, boring tasks but am interested in everything (except I don't like computers, because they hate me and lawyers, politicians and businessmen, because they are shifty bastards.) I am the only guy at my school who does modern history, extension history, physics, chemistry, advanced english, extension english and mathematics. That is I am the only science/humanities man and I am pressured to specialize.
As to career, I will probably go into science (even though you get no money and little recognition) because it details finding out about the absolute, practical truths of how the universe works (well until the next theory comes along to demolish the previous anyway). I do not know enough about science to choose a specific field but biochemistry, psychology or medical science seem particularly interesting. History can have the luxury of being another hobby. Research in science is a risk I am currently willing to take, but we'll see if I change my mind later.
I would like to have a stable marriage and children to carry on the genes. (Yes that kind of immortality).