Definition of "self-mastery" [self-mastery]

• Self-command. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "But despite intense private misery, she reacted with outward courage and self-mastery."
• "Instead by embracing them, I have experienced a freedom and joy beyond description as I move toward self-mastery with earnestness and sincerity."
• "So I praise these young people's self-mastery – but only up to a point."