A man told his friend: "My wife only has two complaints: nothing to wear and not enough closet space."
To me, planning is key. I usually choose my outfit in the evening so that I can get out of the door in the morning in time to catch my train. If I don't, it's usually a small catastrophe, and certainly a panicky moment when I think that I have nothing to wear, even though the closet is bursting. Certainly if I don't choose the outfit in advance, it tends to be boring and un-coordinated, and all day it just won't feel right.
Sometimes I even plan the whole week's outfits in advance, especially if I know that the week will be extraordinarily busy. If only I could be that organized in other areas of my life!