The day finally came—the day I realized my father wasn’t indestructible. As a boy, I knew his strength and determination. But in my early adult years, he injured his back, and I realized that my father was mortal after all. I stayed with my parents to help my dad to the bathroom, assisting him in dressing, even guiding a glass of water to his mouth—it was humbling to him. He made some initial attempts to accomplish small tasks, but admitted, “I can’t do anything without your help.” He eventually recovered to his strong self, but that experience taught both of…