Obstacles are like wild animals. They are cowards but they will bluff you if they can. If they see you are afraid of them... they are liable to spring upon you; but if you look them squarely in the eye, they will slink out of sight. ↗
So all of these things are going on that make you wake up and realize you are a mortal person. You can choose to cruise through your life, but if you do, you're going to open your eyes at some point, and it's gone. ↗