Got compliments on your outfit today? Snap a photo of it with your phone, so you'll have a quick reminder of what to wear the next time you're in a rush. Another great tool is polyvore. I create "collections" of outfits that I've worn and liked. So when I need a "sure thing", no need to stress...I can peruse my collections and choose an outfit that has already proven itself.
Borrowed in part from, Instyle Makeover Magazine's article, "50 Best Fashion Tips Of All Time."