Good topic.
I had a psychiatrist in my first rehab tell me that I could excel & be VERY productive at anything I really put my mind to because I can 'obsess' over it and tune everything else out. She said it can be a blessing or a curse, my choice.
When I buy two pizzas, intending to save one for tomorrow, and I eat both of them in one sitting it reminds me of the 'curse' part.
So, I tend to 'over-everything' and I just have to be careful what I apply myself to. It's great for work and working out.