I'm having the day of hell!!!!

Just been on management class and having a management debate. So no fire at all, and the tutor said that my group could've been better, whatsoever,, but I'll get credit for that. But it's not about that!! I just got my management research report and guess what i get??? 7/20!!! f*ck! f*ck! f*ck! well, i got 12.50/25 on my e-student (where you can check your results online) but still, loads of f*ck for this subject!

I don't know if it's me who's being stupid or the tutor is just a tough-marker. And everyone's getting a better mark than me!! I guess :( I'm devastating now. It's miserable to know that you are incapable of something while your classmates success sweetly. shit shit shit!! This is what I call 'a bad day'. And now I am super afraid because I have another homework due today, ACAD.. duhhh.. why in the world do I have to study management???? And how am I to tell mom and dad if I don't want to choose management as my major in the future - that, if I don't fail this semester subject. T.T

Why is this happening?? why???

Why can I have a bigger brain? I mean like really, I think my classmates are good..!! And the way wesrtern people think is rock!! My debate team is a guy named Jn, and he is a local, and yeah he is good. I think I influenced his performance in a bad way.. oh nooo!!!

Do you have any tips to get smarter?? other than study, coz I've been trying to work on that one..