Teenagers must decide about their future, and many of them don't like what they chose.
That it's because they were conditioned by what people think about it, especially by parents. They put much pressure on their children when they have to take this important decision.
We think that  teenagers have to decide about their own future by themselves. When you are deciding something, firstly  you  have to look for what you like and  what can make you happy. You have to be sure about your decision, and think that you've taken the right one. Because it is your future, not your parents' one.
In fact, some parents tell their children what they have to do, because they think that they are right and they do not have  account what they children really want. In the same way, it is true that in most cases, the other people's opinion can be helpful, but in this case the best it's that children weren't conditioned by other people.
So as a summarize, you have to do what you want and the things that can make you happy. You don't have to worry about what people say, because it's your future and it's your decision. You can consider that many people who have triumphed are those who risked  with their own ideas.