reggie, I am a legally blind guy in a wheelchair who has lived at a few rehab centers over the years, riden paratransit vans for folks who are disabled, worked a computer lab for disabled people and was in several classes with disabled people back in high school.
You are far above them all. You can operate a computer, type, compose sentences and thoughts, drive, live on your own, etc, etc. You should see the emails I get from folks from other seas and other disabled people. I have no idea what they are asking or saying. Then you got those 30 somethings who live with their parents. I know many are able to live on their own, but choose not to.
Your brain is like a muscle. I would suggest trying word games, puzzles and other mental exercises to help build your brain. This is just a general suggestion, excuse me if you are unable to do some stuff. I have met a few folks with brain problems and in some cases parts of the brain is damage and they can not do math, but something like math. Some have no short term memory and must make constant notes to remember anything over time. At one rehab center they put up signs for different folks with brain injuries to direct them to different places.
Remember, there is always a way around your problem. Just need to know how you work, what your limits are.