Anxiety
The philosopher Søren Kierkegaard, in "The Concept of Anxiety" (1844), described anxiety or dread associated with the "dizziness of freedom" and suggested the possibility for positive resolution of anxiety through the self-conscious exercise of responsibility and choosing. In "Art and Artist" (1932), the psychologist Otto Rank wrote that the psychological trauma of birth was the pre-eminent human symbol of existential anxiety and encompasses the creative person's simultaneous fear of – and desire for – separation, individuation, and differentiation.
L. Ron Hubbard
He wrote in January 1949 that he was working on a "book of psychology" about "the cause and cure of nervous tension", which he was going to call "The Dark Sword", "Excalibur" or "Science of the Mind". On March 8, 1949, Hubbard wrote to friend and fellow science-fiction author Robert Heinlein from Savannah, Georgia. Hubbard referenced Heinlein's earlier work Coventry, in
in which a utopian government has the ability to psychologically "cure" criminals of violent personality traits. Wrote Hubbard: 
His first published articles in Dianetics were "Terra Incognita: The Mind" in the Explorer Club Journal and another one that impacted people more heavily in Astounding Science Fiction.