Well, I'm 15, but Im in an agricultural program, ( i want to be a vet) so we do a lot of work that you would do in a norm. job. You're there for two periods a day, and I also go for my lunch and study hall period, so I spend 4 out of 8 periods down there. Anyway, my point is that the work I do is (for the most part) with people I enjoy being around, and with animals, which calm me, and I absolutely adore. When I'm manic, I'm calm enough to work when I'm with the animals, and when I'm depressed, they lift my spirits. Whenever I'm feeling low, I just grab a bunny, hamster, guinea pig, ect, and it imedeatly puts me in more of a serene, level mood, so I know as long as I stick with this career choice, I won't have job problems.
Therefore, my advice to you is to find something you enjoy doing, around people that you like.

Easier said then done, I know.
Start with finding something you truly enjoy doing. For me, that's working with the animals. Then try to form good relationships with the people that work there.

Good luck!