decisions, decisions

It has come to that point in my life that I have to chose what I want to do with my life. Yes I`m only 16! Next year I have to chose 4 different subjects. I was thinking about taking the hardest math, physics, chemistry and English. And then I found out how hard it would be. I just want to be done with school but I can`t see myself outside the school system. I`m convinced that I will be one of those people stuck at school forever with PHDs in everything. Rocks, math, nutrition, Chinese and everything unnecessary. I`m only 16 years for gods sake. I can`t make good decisions. That`s why we are called teenagers.