Failure will happen. You work hard, sometimes very hard, and then the desired outcome does not come to be. You take an energy hit and your pride maybe bruised, but not for long if you take a step; then another. Take one even when you really don't feel like it and you find yourself walking on the path again. The path guides you with light and warns you with shadows. Remember the shadows are merely the edge of light. Step after step, the motion provides you with energy. Then as physics teaches us, an object in motion tends to remain in motion. But first - just one step.