Once a thought or wish is released, its effect is influenced most by the original thinker, who is always attuned to it. If such a one says or thinks something against it, it immediately reaches the mental plane on the breath and destroys all the concentration that has been set up there. No accommodation being made on the mental plane, there can be no success on the physical plane.
This is a wonderful law which makes man the master of his own destiny, and gives him what is erroneously called freedom of will, but which is strictly speaking, continuous opportunity to do good, no matter how many the shortcomings or how often the repetition of serious mistakes. That is to say, the Mercy and Forgiveness of God are characterized by the Wisdom, which enables man to "see", not by any blind relief from mistakes. But neither is man punished other than in his failure to succeed until he understands and practices the Law - mental, moral or spiritual.