life is rough vro

ever since I graduated highschool I've felt like this gigantic wave of fog has gone over me and prevents me from being who I was, in every way of life I feel I've declined. I can't study, I can't care for myself, I can't stop being tired, my brain won't finish thoughts, and I can't function at a baseline that promotes improvement. it sucks ass and I feel so much disdain about it. I am not who I am. I say things I don't mean, I struggle to think before I say, I have a hard time drawing connections between things, I can't look inward without feeling a massive roadblock in my way, so on and so forth. Is this a medical issue? a therapy issue? a me issue? an environmental issue? I have no idea!!!!!!!!! god!!!!! I feel as though if I don't improve now I will never be a good person to be around again and I'm scared of becoming that. I want to be someone people like and want to be around. I want to be smart and have a degree to prove myself (not everyone needs a degree obv its a me thing), I want to move to a new city, I want to stand up for myself against my grandpa and my dad, I want to have the push from within to care for more than others; so I can care about myself too. I need to do something yet I don't know what.