Although I am NOT a doctor, have you ever considered you might have a mild case of ADD (attention deficit disorder
)? Your symptoms
sound like mine (I'm 54), and throughout my life I've had trouble concentrating, completing tasks, etc. What got me through school, and excelling was my intellect. I'm a teacher, so as an adult, I recognized the symptoms. When I was growing up, no one knew about ADD. I'm not saying that is what you have, I'm just throwing it out as a possibility.