I wanna learn every single thing in the world?

Hey, I'm a 20 year old English language and literature student. Actually I didn't want that but I started studying this due to misdirections. Sitting like this and just learning about British authors and poets is killing me.
I'm obsessed with chemistry and wanted to be chemist but my chemistry teacher said that i will never be able to find a job in my country as a chemist. So he talked to me and told me to study in language field since I know 3 languages. I accepted and I was just 16, so I was confused.
But now I wanna do anything about chemistry, physics, mechanical, astronomy etc etc. (And art too, but art was so easy to put into practice. So i did it.) And I can't stop thinking about those. I even have some invention ideas but don't know how to do them. And I shared one of my ideas with my med student friend. I said that this invention might be useless. And he said "no really, do you know that this invention can contribute to the ability of physically disabled people to walk again." I didn't believe him at first but then he explained how it works.
So yeah I have ideas for the world but don't know how to do them. I'm gonna lose my mind bc of thinking so much about those. What should I do? Please give me advices guys.

(by the way this question is not a troll question. I bet some people will think its a troll)
I wanna learn every single thing in the world?
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