How can anyone trust someone who talks about one thing but does another?
Leading by example is one of the most potent forms of leadership. Effective and inspirational leaders model the way for others to follow. Great leaders push their people forward with excitement, inspiration, trust, and vision. But, to become one of the great of leadership, it takes the strength of character and a firm commitment to do the right thing, at the right time, for the right reason.
This means doing what you say when you say it. Become the kind of leader that people would follow voluntarily, even if you had no title or position. If your team can't trust you and your character is questionable, you'll never lead your people and, by extension, your company to greatness. As Thema Davis said, be careful your actions are screaming over your words.