I have the same problems with you, i can never concentrate in many things. I feel so dizzy after i read 1 page of a book/article, i always skip many things when i read, i usually only read the first and last paragraph.
I only study 4 hours before exam, it's because i feel it useless to study everyday, i can never focus on what i read. Luckily i never have problem in school, i can get as many as A's i want.
But yeah it's so horrible to never able focus on anything, i like to write fiction stories but i rarely finish it. Duh..i don't want to take any meds nor go to a psychiatrist.