My mind wanders on each and every thing and if I pick any thing new to study, I usually do well in the first few weeks but after sometime my mind just can't do that thing or I can say I can do sprints but marathon is something I can't do. I tend to forget things/talks people do and I feel I've no record of time. Even when there's a deadline, I consciously ignore it and just leave the things on their own. 95-99% of the times I have a hard time in concentrating or sitting for long for something I know is useful for me.