I think when the intent behind the prayer, comes from a place of pure love and is then backed by unwavering faith, a space is created for a miracle to happen. God is always there to help us when we need Him - all He asks is that we believe and have faith -"Ask and it shall be given unto you. Seek and you shall find. Knock and the door shall be open unto you."

Every human being has this amazing resource available to them but unfortunately our faith is not always unwavering and we sometimes let doubt lead the way. "In God all things are possible" - I think the course of anything can be changed by genuine,faith filled prayer.