I'm not sure if you've seen "School of Rock" starring Jack Black, but there's a scene in the movie where Joan Cusack, who plays a tough-as-nails prep school principal reviled for her disciplinarian ways, tells her fellow colleagues that it's always best to "over prepare." "The best defense is a good offense," she goes on to say. As someone with OCD-like tendencies, I've always lived by this motto. Just yesterday, as I was pulling into the parking lot of my barber shop, I noticed there was no available parking, which left me no choice but to find a metered space in the adjacent street. I debated how much change to put in the meter and wound up putting enough to last me an hour and 40 minutes. Initially, I thought I had gone overboard. "Why did I put so much?" I asked myself. It usually takes my barber about 20-30 minutes to cut my hair, but the only difference was this particular appointment was scheduled for the early afte...