“This sickness unto death is what Kierkegaard calls despair. According to Kierkegaard, an individual is “in despair” if he does not align himself with God or God’s plan for the self. In this way, he loses his self, which Kierkegaard defines as the “relation’s relating itself to itself in the relation.” Kierkegaard defines humanity as the tension between the “finite and infinite”, and the “possible and the necessary”, and is identifiable with the dialectical balancing act between these opposing features, the relation. While humans are inherently reflective and self-conscious beings, to become a true self one must not only be conscious of the self but also be conscious of being grounded in love, viz the source of the self in “the power that created it.” When one either denies this self or the power that creates and sustains this self, one is in despair.” https://en.wikipedia.org/wiki/The_Sickness_Unto_Death#Summary