While we all need external structure in our lives—some degree of predictability, routine, organization—those with ADD need it much more than most people. They need external structure so much because they so lack internal structure. They carry with them a frightening sense that their world might cave in at any moment. They often feel on the brink of disaster, as if they were juggling a few more balls than they’re able to. Their inner world begs for reassurance, for signposts and guidelines.