Which of the following is a method of self-discipline mentioned?

Setting personal goals is a fundamental method of self-discipline because it involves establishing clear, achievable objectives that guide behavior and decision-making. By creating personal goals, an individual can focus their efforts on achieving specific outcomes, which reinforces self-discipline. This method allows individuals to measure their progress and hold themselves accountable, fostering a sense of responsibility towards their own actions.

In contrast, continuous feedback from supervisors, a buddy system, and regular inspections are more external forms of discipline and control. While they can support self-discipline by providing guidance, encouragement, or oversight, they do not fundamentally involve the individual's own initiative to set and pursue their objectives. Personal goal setting emphasizes an internal drive that is critical for developing long-term discipline and personal growth.