The power of purpose is similar to the energy of light focused through a magnifying glass. Diffused light has little use, but when its energy is concentrated—as through a magnifying glass—that same light can set fire to paper. Focus its energy even more, as with a laser beam, and it has the power to cut through steel. Likewise, a clear sense of purpose enables you to focus your efforts on what matters most, compelling you to take risks and push forward, regardless of the odds or obstacles.