There is no specific thing I can pin down as the source of this, but my mind just feels like it is constantly in pain. It's like the crippling sense of a migraine without the actual pain if that makes sense. I have no idea how to really describe this or if it's even real or just a subconscious thing I've developed.  I feel it the worst at work when I can't distract myself with things like video games. I don't know how to cope with this, I don't know if I'm just weak and it's nothing, I just wish I knew what was wrong with me.