The process for planning your 'fit is three-fold: you'll want to plan what workout you're going to do, when you're going to do it, and what you're going to wear. If you need to pack a workout bag, do it the night before, and if you plan to workout in the morning, lay out your clothes before bed.
This method is tried and true. In preschool, I would pick out my clothes the night before because it meant I could sleep in, I wouldn't waste time, and by the time I was awake enough to whine about school, the opportunity was gone because I was already there.