Part 1
Identifying with a negative reaction over some misstep we made, and then becoming even more negative because we can see our fallen estate... is exactly how the dark parts of us do their dark work in the dark of us to ensure we stay negative and living under their dark thumb.
Part 2
The proof of our unconscious, yet consensual, relationship with a lower level of self that lives to compromise us is most evident when -- in the heat of an unwanted moment -- we are more inclined to identify with, and then justify our negative reactions... than we are willing to impersonally observe them.