Don't we all at times feel constrained by the rigidity of our exoskeleton? Perhaps we feel a simple need to grow, or perhaps an urge to metamorphose into something entirely new. Either way, we must go through a painful, yet necessary ecdysis(wiki), the moulting of that old skin in favor of a new, pliant shell that will allow us to fulfill our greater potential.
Then, just as we emerge, we are aware of how teneral our state is, how soft and pale we feel in our new shell. Over time, that shell hardens, protecting us once again, but soon becoming all-too constricting...