What is moodiness?

The following is an excerpt from a samvaad (dialogue) session with Acharya Prashant.

Question: “Is being moody good or not?”

Acharya Prashant (AP): But, first of all, must we not ask what are these moods? Do you know what these moods really are? You take water in a saucer, in a saucer, a plate, and the water is lying still but if you keep the saucer under this fan, what will happen to the surface of the…