How do I know what do I want to be?

biabyblue9
I'm in 10th grade, by this time i should know or be thinking of what am i going to study for my career but i still have no idea. i need your opinion about how can i decide what to study, i need to make my mind before it's to late, how can i choose, what are things that bring me a bright future, wich are the ones so i get paid better, etc. please i need ideas.
How do I know what do I want to be?
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