The "dark night" speaks to your soul’s development. It’s not just about a biochemical imbalance or a neglectful mother, though these may be the provokers. It’s a releasing of your ego's grasp on the psyche, permitting positive change that can prompt redefinition of the self. Since the period is profoundly unsettling, it’s commonly perceived as "darkness." Mystics consider the dark night of depression not a negative, but a test of faith, an occasion for transformation.