How come?

It just so happens that you go through horrible, linear, redundant activities and become complacent with your life. All of a sudden something triggers an epiphany. The smallest of things can change and make someone’s life spin like the past didn’t even exist. How come these things happen? How come someone spends their whole life fighting for something, believing until the last second that he/she might succeed, and in the end fail? And how come something insignificant can motivate people like nothing else, giving them the courage and determination to fight it all? How messed up are we, and how crazy it is for us, humankind, to try and normalize our reality, use labels and create order in a constant chaotic state of mind?!