A great deal of youth is spent challenging things, expending voluminous amounts of energy testing everything, and that's good because that is how progress comes about. Then you turn the corner, and assuming your mind is still sharp and your spirit vibrant, you still challenge things. However, you also learn that certain universal laws remain unwavering like the constellations in the sky. And if you find yourself adrift, you can always course correct by pointing to the North Star. That's when life starts to get really interesting, fun, and fast.