Not everyone will become a great leader, but everyone can become a better leader.
Don't ever be impressed with goal setting. Be impressed with goal getting.
Leaders who fail to lift others in the long run, fail to lift themselves.
The depth of your mythology is the extent of your effectiveness.
Failed plans should not be interpreted as a failed vision. Visions don't change, they are only refined. Plans rarely stay the same, and are scrapped or adjusted as needed. Be stubborn about the vision, but flexible with your plan.
A sense of responsibility is the clearest indication of mature leadership.