God does heal. He does it in two ways, through sci-ence and through faith.
In healing, confession is important, for much illness results from buried resentments and guilt. Confession to a competent counselor releases these poisons, cleanses the mind and soul, thus stopping the passing on of diseased thoughts to the body. Effectual prayer, that is scientific prayer, is very powerful.
The essence of the technique is confess your faults, pray with kindred spirits even if separated by distance, and enthusiastically (fervently) believe.