Self-efficacy theory holds that an individual's belief in their own ability to complete a task impacts their likelihood of success. There are four main ways to increase self-efficacy: through enactive mastery of tasks, vicarious modeling by observing others, verbal persuasion to convince one of their abilities, and arousal to energize a person to perform. Applying these sources of self-efficacy, such as through skills training programs that use practice, can increase confidence and ultimately improve performance in work settings.