He was wearing a blue scarf around his neck. Nothing stays still. To be alive is to move, and movement can only end in death. This is just the universe doing its thing. Winning the lottery or getting hit by a bus, mostly it has nothing to do with us, or what we want.
Some journeyman footballer misses a penalty and a helicopter falls out of the sky.
One can never be truly comfortable or at ease in this world. You may feel you are at times but sooner or later you will be rudely awakened. This is not to say that human volitions count for nothing. Actions and words, thoughts and dreams even, are events that will give rise to other events as surely as rain will make flowers grow and lack of it will make them die. So keep a close watch on that heart of yours.