To address fully the nature of depression, we first must define “depressed feelings,” “depressed mood,” and “clinical depression.” “Depressed feelings” are emotional responses to internal or external stimuli or need states. The feelings may well be relatively brief and unpredictable. “Depressed mood” on the other hand, describes a situation with a prevailing feeling that is consistent for a longer period of time. With “clinical depression,” a person experiences physical, emotional, and spiritual depletion in such a manner that all of a person’s personal and behavioral coping mechanisms are threatened. Every action becomes a nearly impossible chore.