望洋兴叹 (wàng yáng xīng tàn): lit. to gaze at the ocean and lament one's inadequacy; fig. to feel powerless and incompetent (to perform a task)

望wàng洋yáng兴xīng叹tàn

lit. to gaze at the ocean and lament one's inadequacy; fig. to feel powerless and incompetent (to perform a task)

The river god reached the sea, saw how small his river was, and sighed. For the moment a task turns out to be far larger than whatever you brought to it.