On the first day of kindergarten, when our son, Mitch, was five years-old, I let go of his hand as he boarded the yellow school bus for the first time. I barely held back the tears. His hand slipped out of mine so he could reach up to grab the hand rail and stretch his little legs to manage the school bus steps. The rule was that no parents were to board the bus with their child. But in the midst of watching my sweet boy climb up those big steps and away from me, I apparen