What should i do with my life?

What should I do with my life? I have to take an important decision, school. I wanna do maths-informatics or chemistry-biology. i love science, but im not good at it. im truly bad at science, especially chemistry tho i adore it. im good at literature and everything else that has nothing to do with science…and i dont like. i dont wanna be anything related to literature or wtv, i want science…my teachers are telling me not to go on the scientific path bc im not gonna resist and this is just making me feel bad about myself. i mean, im actually doing my best to understand and to become better but it’s just not enough and everyone is telling me that i shouldn’t get in it bc it’s gonna destroy me, mentally. how can i be something i like, if im not good at it? even tho I’m studying for it it’s such a waste! and im so scared that the decision ill make will ruin my future..im crying at the thought that my best is never enough and I’m not capable of anything bc of it. im already stressing tho it’s still 7 months to go. have u ever been in this situation? what’d u do if u were me?...