The answer to the blank space given in the question is self-regulation.
Self-regulation in this context means that as individuals in a civil society, a person should follow standards accepted by a nongovernmental entity despite not having the threat of a punishment if she or he chose to not follow the rule. Since nongovernmental entities do not have the same power as a government, an individual’s self-regulation would determine whether a person would abide by the standards set or not.