We don't mature momentarily, but over the long-term.
A leader is one who knows the way, goes the way, and shows the way.
Even if you've had a negative effect on others in the past, you can turn that around and make your impact a positive one.
He that thinketh he leadeth and hath no one following him is only taking a walk.
The only guarantee for failure is to stop trying
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.