I can't always control my body the way I want to, and I can't control when I feel good or when I don't. I can control how clear my mind is. And I can control how willing I am to step up if somebody needs me.
I saw a birthday card the other day, and it said, "If you didn't know how old you were, how old would you think you were?" I started changing it in my mind right away to, "If you didn't know how sick you were, how sick would you think you were?"