Christian Science healing doesn't merely convert present troubles into past history. Christian Science healing demonstrates that troubles are errors about the true history of the real man, created in God's likeness. Constructive gratitude for a healing enables us to derive increasing instruction because it shows us how to minimize the vanquished error and maximize the victor, divine Truth.
Gratitude in one's heart honors deliverance, not dis-ease. Such gratitude is an aspect of the substance of healing; and the substance gleaned in Christian Science healing is the progressive understanding and conviction of the truth that effected the healing.
Who should know what gratitude for Christian Science is, and what it does, better than the Discoverer and Founder of this Science? In her book The First Church of Christ, Scientist, and Miscellany, Mrs. Eddy writes, "What is gratitude but a powerful camera obscura, a thing focusing light where love, memory, and all within the human heart is present to manifest light." Miscellany, p. 164.