I've had this issue myself, but I also have ADHD. Do you think you have ADHD, possibly? However, I do know that psych meds can make you foggy headed and screw up your ability to concentrate, so it could be just a med issue, or it could be both ADHD and meds.

When it comes to reading, some people here suggested listening to audiobooks while reading. It helps me focus really well, and I know you like listening to things (especially music). Not sure what to do about newspapers and stuff without audiobooks, though.

Also, I don't know exactly how you can improve your ability to write and hold conversations, but sometimes I can't write or hold a conversation because I'm stressed. Do you think stress may be part of the issue, if it's not meds or ADHD? Listening to some nature sounds while you write and talk could help you. I know you like listening to music because you've said in the past that it helps you concentrate, so why not try that?