Think about all the grades you want on that A4 sheet of paper on the 25th August. You know that what grades you get will make you happy because you have worked hard.
Man it's only another 2 months until the last exam is over and they haven't even started!! Then you have all the time in the world to hibernate in your room playing Star wars battlefront, drinking the Smirnoff and coke 24/7, Netflix 'n Chill with your bird, lots of TSR, eating, sleeping... you'll have all the time in the world in just two months!!
Meanwhile, I suggest you take breaks. I have literally had no social life so I pretty depressed... but then I jump on my PC and start playing Dota 2 with all my other mates who are also hermit crabs now!
It's pretty late and i have been revising for about 5 hours and I assume you've also been revising. It's time to chill out and take a break.