Do what I like or like the mediocrities?

I started learning electronic organ when I was 4 years old and tried to learn piano when I was 9. Now I get interests in folk music and I want to learn guitar.

I met a musician on the internet a few days ago. I told him I want to learn guitar, and he promised to teach me online. I was excited...

But my parents said apart from working for the exams, I can't learn any other things ...

And I wanted to write many proses, poems or other things about art. But I can't...

I want to learn German, and go to a German college. But my parents say that now I just need to do things for the exams, like all the other chinese students. When I am older, I will be able to do other things...

But I think, when I'm older, I will have to do a lot of other things like the mediocrities...