get off laptop/pc, go to a quiet place (lib or such), time yourself, don't be on too much caffeine, and at last, just focus on what ever you are studying by only thinking about the content of whatever you are studying.
Prothom dorkar probooool ichsa shokti ebong epori shetar bastobe rupantorito korar porchesh ta. Ei dui ek hole, porikhkhay valo kora keno, onno je kono kaaj-e shafollo pawa shomvob.
mia vai sob che valo upai hosse raat jage poren. lol. eita shune afne haste paren. kintu amar personal experience raater bela concentrate kora jai beshi. karon tokhon din duniyar kono chinta matha ae aashe na. even apner concentrate bhange kokhon jokhon kina apner shamne keo kotha bole n apni o shei jaigai na kotha bole paren na. kintu raater bela to birakto korar lock nai. amar exam hoile ami sob somoy raat 11 - 5 projonto porashuna kortam n diner bela ghumaitam. r jai din class thakto shei din class ae ghumaitam.