One small hope can work wonder to bring lost energy back to human life.We human have so much power and energy within us but sometime we lost it due to many reason like depression, sadness or in painful situations. If the same energy could not be brought back, a human could die slowly. Here, if we remind such person or provide him/her a genuine hope, he/she may get back to normal because there is a valid reason for him/her to live. For that hope, they try to fight within themselves and over come from such lost situation. I have seen people those who lost everything mentally and become weaker got back their life just for some hope, a hope for what they want to live.
We human has so much energy and power within us which even we don't know. This is the power which allow us to fight even in that situation against us. There are so many incident where we wonder how one fought with the death. This all happen because of the power within us whic we are not aware of.