The world isn't a peaceful place where you can lay on your body and daydreaming.
You have to stay awake and aware of every dangerous that can possibly happen.
You can never trust anyone who come over you, even they may seem weak, but they can eat you inside.
You don't even know what kind of weapons they're carrying on inside their bodies.
You will become friendless. You have to fight alone to be braver, to be your own savior.
You can't even always just pray for mercy, when there's none. You will scream where God is... but you won't find any.
The world is such as a dirty place.