Always building walls creates a shield but never really stops you from being exposed to pain. It takes a long time of living and going through it to realize that you are not fully living if you are hiding behind walls. How many times must we go through the inclination to change, actually change, and then realize change is imminent or required yet again?

Life is fundamentally about change and how we respond to, react to, and live in it. Change, perhaps by nature/necessity, makes most of our responses/answers fluid. What we experience, see, do today leads to changes in how we move through the world.