You Feel Like an Imposture in Your Own Body?

I felt like an imposture in my own body because your friends dropped you, because they said your personality had change. And everything was hard, and i couldn't process spoken information, and i was fresh foed all the time. So i sort of had to go, i'm not ever going to be exactly that person again, and it's going to have to be ok,. cause that's the only way im gong to move on.