Synonyms for Self-denial (same or very similar meaning)
WordNet sense 1 (the trait of practicing self discipline):
self-disciplineWordNet sense 2 (the act of denying yourself; controlling your impulses):
self-controlWordNet sense 3 (renunciation of your own interests in favor of the interests of others):
self-abnegationFrom the ODE community, based on WordNetadd/edit