A thought in motion tends to stay in motion until a new thought interrupts it. At any moment you can choose a better thought. “The primary cause of unhappiness is never the situation, but your thoughts about it.
The kawataro is a variety of kappa (water imp) which, according to the accompanying text, likes to eat people and practice sumo. An indentation on top of the creature's head is filled with water. The kawataro becomes weak when the water spills out.
The Irish god, Nechtan, possessed the secret "Well of Wisdom," the holy well of knowledge. Only he was allowed to draw water from it. Nine hazel trees (associated w/ wisdom) grew around the well. Five salmon lived in the well & ate the fallen nuts.