First, figure out what is interesting for you. Planes? Submarines? Moon? Mars? Plants? Animals? Stars? Pollution? Medicines? Immortality Outer space? Magma and lava? Minerals and rocks? Travelling faster than speed of light? Invisibility? Quantum physics?
Second, figure out how to use school studies to further your knowledge of the world at the same time. Without good grades, how will you get your dream achieved?
And I have no time for anything. I used to visit TMO every day, now I am happy if I can visit it once a week. Hopefully, it settles down, soon, into a routine where I will not be afraid of missing a crucial deadline.
Grade nine... I don't remember much about it. It was at least seven years ago for me? I remember my teachers, though; in Biology, Mathematics, Foreign Language, Literature, Physics, Chemistry.... I remember them fondly, and I would have recognised them if there was a slightest chance of meeting them. But they are far away, far away.
Best wishes.