How do you guys manage to study?

So, i live in Italy, and here school is pretty different from other places, to make it short, we have a lot of kinds of school divided in three categories based on the difficulty of the school itself, and i go to the most "advanced" category, in the scientific department. Every single day, when i get home, i never managed to get myself to open the books and try to study whatever i have for the next day, i just can't get myself to do so. My question is, what do you do to actually get the willpower to study? do you have any techniques ot something like that?