One main thing for me is I can't think the way I used to. Meaning, I can't think clearly. Things are always foggy, blurry, jumbled, going too fast, and confusing. I can't read (could barely make it through your post, for example,) but I used to read novels. I can't just do one thing, no focus. I forget things all the time. When I feel good, it's like coming up for air, because mostly I'm lost in this jumble of racing thoughts.