Self-discipline

(n.) Correction or government of one's self for the sake of improvement.

Thesaurus Entries

abnegation, aplomb, composure, constraint, control, denial, discipline, forbearance, frugality, golden mean, independence, moderateness, moderation, nothing in excess, possession, renouncement, renunciation, restraint, self-command, self-conquest, self-control, self-denial, self-government, self-mastery, self-possession, self-restraint, soberness, sobriety, sophrosyne, temperance, temperateness, willpower