Crawl through the mud like a...butterfly?

I just started reading Francis Chan's book Forgotten God, about the Holy Spirit.  At the end of chapter one he talks about how crazy it must be for a caterpillar.  "For all its caterpillar life, it crawls around a small patch of dirt and up and down a few plants.  Then one day it takes a nap.  A long nap.  And then, what in the world must go through its head when it wakes up to discover it can fly?"  What he does is relates that extraordinary change to the change a person goes through when they are born-again of the Holy Spirit.  That before we begin to follow Christ we are just crawling around in the mud (our sin), but then after our rebirth we can FLY (live empowered by the Spirit of God)!  What occurred to me next I may have heard Chan or someone else say before, or maybe it's my own little gem of an idea that God downloaded to me, but what if the caterpillar just continued to crawl through the mud and never flew?  What if all his other caterpillar friends still didn't have wings and so he just kept doing what he knew and what he saw his friends do instead of what he was made to do?  Do you see where I'm going with this?  Do we, Christians, continue to crawl through the mud because it's what we know or because it's what we see other people doing instead of accepting what the Holy Spirit has transformed us into?  Do we fail to do what the Holy Spirit enables us to do with our new life?  What if we look to the Holy Spirit and to God's Word and began to fly!?  What then Church!?  What then!?