You're young! You have what, two more years of high school before you finish? If you can, please consider going to a university. If you're not sure what to go for and you're in the U.S., go to a Community College and take liberal arts classes. Doing this will give you a 2 year jump start (A.A./A.S.) on a 4 year B.A./B.S. or at least save you a lot of money!
In retrospect, I could not comprehend where I am at this moment in my life when I was 16 years old. The experiences the Lord has provided me have shaped who I am. My advice:
1) Be patient! Do not be anxious! (This is the hardest thing to do)
2) Keep in [meaningful] prayer. (No earthly being is going to tell you what God's specific plan is for your life.)
3) Be vigilant of how your Christian friends and family perceive you. What do they believe are your strong points?
4) Remain humble (nobody's perfect), and acknowledge continually that our righteousness comes from Providence.
This list could go on, but that should get you started.