Set the example. As a Marine leader your duty is to set the standards for your Marines by personal example. Your appearance, attitude, physical fitness, and personal example are all watched by the Marines in your unit. If your personal standards are high, then you can rightfully demand the same of your Marines. If your personal standards are not high you are setting a double standard for your Marines, and you will rapidly lose their respect and confidence.
Leadership is taught by example.
Be physically fit, well groomed, and correctly dressed. Maintain an optimistic outlook. Develop the will to win by capitalizing on your unit's abilities. The more difficult the situation is, the better your chance is to display an attitude of calmness and confidence. Conduct yourself so that your personal habits are not open to criticism.