I always select the clothes I'm going to wear the next day and set them out on my bathroom counter the night before. I never have to wonder (during a stressful morning!) what's clean, what matches, etc.
I have been doing this all my life. I think I started doing this in first grade--I'm 40 now. No one ever told me to do it, I just did it. Kind of weird, right? But, it saves me time and reduces my stress level in the mornings, that's for sure!