Vision with action can change the world. A leader is a risk taker and an innovator. New ideas may come from yourself from others in the organization, or from the community. A leader should recognize good ideas, actively support them, and encourage action. One may call them early adapters of innovation.
Leaders are pioneers - people who are willing to step out into the unknown.
Just think of the first time you played baseball. You probably were not perfect at hitting the ball or running the bases. Leaders are learners and must be able to learn from their mistakes as well as their successes. So must they encourage their group members and support them through their mistakes. Without mistakes, there is no learning or growth.