Study+hardworking=Exam pass

I suppose everyone knows the equation tat i wrote on title.
but,
i juz cant follow the equation.
things happen whn i wanna study,
like i saw comic beside my bed,
felt hungry,
felt sleepy...
wuwuwu..
even though there is nothing happend i oso cant concentrate on it...
exam is knocking my door now..
but i haven study anything~~!
God please help me to get rid of those thing..
i'm juz a crap..some one help me~~~!