Should one ever be tempted to suspect that some disease is developing in his system, there is a divinely prescribed method of handling such a temptation. Christ Jesus stated it simply and yet authoritatively when he said to Jairus, who had come imploring Jesus to heal his daughter, "Be not afraid, only believe." Mark 5:36; We read that the Master made similar declarations on a number of occasions with healing results.
Under the special heading "Mental Treatment Illustrated," in the chapter "Christian Science Practice" in Science and Health, Mrs. Eddy echoes Christ Jesus' approach. She says, "Christian scientific practice begins with Christ's keynote of harmony, 'Be not afraid!'"Science and Health, p. 410;
However, much more is involved than simply thinking to oneself, "I'm not afraid," and then expecting entire immunity from disease or danger. Christian Science isn't demonstrated through human thought control or verbal repetition, no matter how frequently or how fervently the words are uttered. Demonstration comes about through the individual's enlarging spiritual understanding of God's supremacy and power, and of His all-encompassing government of man, His perfect, spiritual likeness or expression.