This is a really interesting post subject.
Correct me if I'm wrong, but I understand the point of therapy to be to feel better in the now, to have happier behaviour patterns, to lose the paralysis. To become unstuck.
For me, overanalyzing was a stage in the process, but not the cure stage.
Here is an example: I used to get a trigger, feel bad, behave bad. Then came counselling. I would get a trigger, feel bad, try to find the root, find it and still feel bad - even worse in fact. Now (after years of work) I get a trigger, don't feel so bad, and think "Yes, I know what that is." I then drop it. This happens in a few seconds.
Maybe one day I won't even get the triggers, but it doesn't matter because I can cope with things as they are now.
Good luck Quackle (I like your name by the way)