Once we know how to do something, we always know. We may require a little refresher if we have allowed our skills to grow rusty, but we never have to start all over again from scratch. And of course, lessons, even for the keenest of students, are not always easy to learn. So, by and large, no matter how much we may claim to seek a life of challenge and growth, we end up sticking with the devil we know. We may flirt with the foreign but we only follow through with the familiar. And then we wonder why our lives lack excitement.