Now the realization of his cowardice gains the upper hand, now defiance and pride.
It is from Carl Jung's "The Theory of Psychoanalysis"
[The neurotic] draws back [from his life tasks] not because of any real impossibility but because of an artificial barrier invented by himself…From this moment on he suffers from an internal conflict. Now the realization of his cowardice gains the upper hand, now defiance and pride. In either case his [energy] is engaged in a useless civil war, and the man becomes incapable of any new enterprise…His efficiency is reduced, he is not fully adapted, he has become – in a word – neurotic.
Although I vaguely understand that it means something along the lines of "once he realizes he is a coward, he then becomes defiant and proud," I'm kind of perplexed why the second "now" and what happens to "defiance and pride." It seems to me something is left out there.
So, what is the exact way to understand this sentence? Thanks for your answer.