Throughout the course of my life, my restless heart has constantly battled the ever-present tendencies to worry about tomorrow. I seem hard-wired to worry, as if it is my internal operating system — “OS John 10.1.” I lose sleep regularly, especially if I have a big event ahead. I think of every scenario that might possibly happen… and even those that have no realistic chance of happening! And I worry about them all. But they rarely come true.