It sounds like maybe the overwhelmingness could be anxiety. That is something to talk about with your t. Also could it be that u may have symtoms of mild ADD? A lot of folks who are smart can get along just fine until high school, or even college, when they realize they are getting overwhelmed and feel as tho they have hit a wall. That could be a reaason u are having trouble focusing. Because by what u mentioned about grasses and such, it is not that u are unintelligent... And that makes me wonder about an undiagnosed case of ADD or an undiagnosed learning disability.