If you can read stuff you're actually interested in just fine then these don't sound like problems, they sound like the brain rejecting boring shit being forced into it, like the gag reflex activating when you put something disgusting in your mouth. If you believe that you need to get a job as a cow manure taste tester then you could work on training your gag reflex to not activate, but why not take a more enjoyable path in life instead? Don't force yourself to read boring shit you don't care about.