This is as good a description of depression that I have yet heard.
I listen to a podcast called Mental Illness Happy Hour (#mentalpod), and have done so for almost 8 years or so. Since a brain injury, and even before, I have had an abiding interest in the brain. The podcast, hosted by Paul Gilmartin (TV host and standup comedian), has guests who discuss their mental illnesses candidly and without restraint. The podcast goes to some very dark places indeed, so that if that is not your bag, I’d give it a pass.
I have some loved ones who suffer depression, and the podcast has given me an unparalleled insight into what that is like for the sufferer. Occasionally, professionals are interviewed discussing many topics related to mental illness and its many manifestations.