I call it maladaptive daydreaming......when I am in a low spot my mind starts to go into fantasy world as an escape I guess. I have to do tasks in small time increments like I set a timer for 15 minutes to study and then allow myself to gaze off into la la land for a bit. yes it takes me longer memorize new material for a test. I am smart it is just the holding onto information. It just does not stick when I am in a heavy state.