I think there are two essential elements to leadership.
The first is initiative. A leader takes action at the opportune time, without waiting for others to go first. This requires faith in one’s own judgment, being willing to take reasonable risks, and being willing to accept the consequences of one’s actions.
The second element is an ability to work effectively with others. A good leader will know how to bring out the best qualities in his team, and how to direct and coordinate the particular talents of individuals so that the team functions as an efficient organism.