What the hell am I doing!!!!!

so disappointed with my test today.. the paper is really quite easy but i messed up again.. haix.. its so simple but i made it looked so difficult until i oversee my points.. really deserve to fail this time.. the MPC is given & yet i do so much just to find the stupid MPS.. haix.. this is the 1st time i'm so confident in a test lor.. never felt any paper any easier than this.. arh!!!!!!!!! really hate myself for being so careless.. really got no face to face myself & others.. super low morale now.. must try to stand on my feet again for the coming main exam.. so so so disappointed.. *sigh* what done cannot be undone.. i really dunno what to say le.. suddenly lost interest in this subject.. damn pissed with myself & only blame myself for my own stupidity.. i can go bang as many walls as i can now.. maybe that can help in my brain.. *pui*