Dude, I totally get you. I've been in the American Behavioral Health System since I was 15 [It blows; now sure how it is in Canada, but it's awful here], and I'm a university student now... A "senior" by definition, but technically more like a junior or maybe a sophomore in my major. My freshman year went well, like you were saying you did great for a bit, but then everything just got bad. Couldn't make myself do anything, ended up just distracting myself online, would fall behind and have to struggle to get caught up, couldn't pay attention, felt like a failure, would compare myself to others, and mentally beat myself to holy hell...

I'm so sorry you're struggling this much, especially so young... I wish I could offer you some advice or guidance. If you can, maybe see a counselor, even at school? A lot of this sounds like it could be attributed to different mental health conditions. I may be a clinical psychology major, but I'm not an expert by any means. Take what I say with a grain of salt. I've just been there. I beat myself, still do, for little things. I'm a try hard by nature, so little slips and mistakes, and I'm absolutely ruthless and destroy my own self-esteem despite knowing it really isn't right. Anyone else does the same thing, and I understand completely and try to offer advice and compassion. I'm so objective... when it's not my own situation or psyche.

If you have questions or just someone to talk to, shot me a DM. I'm a little older, so maybe I can at least give you some tips that got me through some of the BS?

Best of luck, friend.