Self Discipline, as defined in this meagre Wikipedia article as being
as the ability to motivate oneself in spite of a negative emotion
This is partly distinct from self control and willpower which from Wikipedia, is defined as
the ability to control one's emotions, behavior, and desires in order to obtain some reward, or avoid some punishment.
I am referring to the former, where there may not necessarily be a reward or punishment involved. I am interested in the neurological basis of self discipline, specifically, are there more primitive areas of the brain at play in trying to defeat our self-discipline that are in turn, inhibited by the frontal cortex or other parts of the brain?