Study~Sleep~

hauz..i force myself to study ,n finally i study but juz 5 min...after 5 min,i fall in sleep..then i tell myself again,after u sleep muz study,but after i wake up,i facebooking~~ haiz..when juz can i study properly...is i keep on like tat,i sure fail n i sure cant master my accounting n other subject...how o??summore i keep on sms-ing wif my fren...cham lo..