How as a adult do you improve at English
I used to be a incredibly good reader and writer, English is my first language and now I just feel like a fucking idiot. My dad forced me to drop out of high school and get my GED and I had a medical event that was neglected, I never got the help I needed to fully recover from it. I felt like my face was melting down and my speech was slurred for the little I could speak. My heart was pounding and I was unable to stand stand or properly use my hands.
At its worst I could not read or write, now I feel helpless. I am slowly learning but I just used to be "smart" now my English is horrible and I sound idiotic at best and make tons of grammar and spelling errors as well as struggle to read the things I used to read for fun. How do I get better again?
Along those lines; how do I slowly work on improving my memory again?