Admittedly, pairing Asperger's with ADD makes it a bit easier to let go, but the combination of the two can utterly destroy your ability to concentrate on important items when something interesting comes along. Of course, you're only letting go because you get distracted by something else, and then when you come back to it... But it's still something you can take advantage of.
It's part of why I tend to post a lot on here. I need something to distract me from the other things I'm doing so I won't go nuts on getting them just right. But I also tend to distract myself from here with other things as well, since I can literally argue forever on a topic.
Senko, it can be difficult, but Namikaze is right. Sometimes, you just have to let it go or accept it will be imperfect or you won't ever get a satisfactory answer.