Self-discipline (noun)

The practice of controlling one's own behavior, thoughts and actions.

Origin:

Mid-17th century, from self- + discipline.

Examples:

1. Developing self-discipline requires a strong will and consistency in actions.
2. She impressed her coach with her self-discipline and dedication to the sport.
3. He attributes his success to his self-discipline and hard work.
4. Lack of self-discipline often leads to procrastination and failure to reach goals.
5. The army instills self-discipline and a strong work ethic in its soldiers.