I had this idea I'd group everyone's organizational tips by topic into a series, but that really makes no sense. They're all there in the comments of my original post, and it actually reads quite well, so I'll direct you there to pick and choose tips as you will. During the next few days I'll be posting some more tips I've received via email.
In general your tips came down to consistent labeling, filing, sorting, boxing, and purging, whether it's stuff in your house or the details clouding your mind. Get it out, get it sorted, get it stored where it needs to be, and revisit your system enough so that it becomes a habit.
It helps me to actually see how people specifically manage the details, so thanks to all of you who shared.