TRUE gratitude for good is always meaningful. It is always able to express itself. Frequently, healing comes as we express gratitude for blessings already received, because this leads consciousness away from mortal beliefs. Gratitude is a conscious love of God. Ingratitude springs from the acceptance of a false concept of man as a mortal.
The Master, Christ Jesus, did not expect us to be grateful for a misconception or for a false mental argument about man as cunning, mean, treacherous, unhappy, deceitful, and wicked, subject to sin and death. But the revelation of Christian Science is explaining to the world the baseless falsity of this concept by bringing to light the truth of man, as God made him, the forever expression of harmony. As we understand this we see how normal and natural is the inclination to express gratitude for good.
And where does the incentive of this healing expression of good come from if not from divine Love, God? This is surely why gratitude for all good is always struggling to articulate itself as if it were forever prophesying: One day I shall witness humanity's full release from bondage to matter. One day all the world will witness this release, and there will be no room left for animosity, bitterness, or hate.