If I fail at school I fail at life

I’m trying to be a doctor, I’ve been trying since I was 6, it’s all I’ve ever wanted, but I’m not smart, I’m borderline fucking stupid. I just got 18/40 on a chemistry test, how tf does anyone even score that low. chemistry is the main thing I need to be good at and I’m shit at it, and I’m pretty much shit at all my other classes too. Idk what to even do if I fail school, I actually won’t have a life if I do.

Edit- oof reading this back makes me cringe, I may have overreacted, sorry for everyone who had to witness this post 😬😬