From Hagakure – The book of the Samurai:

“When meeting calamities or difficult situations, it is not enough to simply say that one is at all flustered. When meeting difficult situations, one should dash forward bravely and with joy. It is the crossing of a single barrier and is like the saying, “The more the water, the higher the boat”*.

Yamamoto Tsunetomo (circa 1700)

*From Pi-yen-lu, a Chinese book of Koans: “The more the water, the higher the boat. The more the mud, the bigger the Buddha”