Stuck

I'm constantly in this loop of not being able to do anything except sleeping. I have to work myself up and start studying, but somehow I'm just unable to... It's really hard to shake off this feeling and getting out of this loop; if you've ever been there, you'd understand. I did though. At one point in time, I was able to snap out of it and start working my ass off to achieve good scores. I got decent marks. So it's not entirely possible, I know I can do it, I know I have done it before. It's just for now I feel like I'm back in square one, like I never tried nor put in any effort, which I did. It's tough.