Humans often admire strength in the form of physical prowess, but we have a much greater strength within ourselves. The strength of our spirit is what pushes us to surpass our limits and become greater than our minds let us believe we can be. Those who have become powerful influences in the world have utilized such inner strength. We all have strong spirits like those of leaders, teachers and heroes — we simply need to stop being anxious about failure or ridicule and allow it to shine.