Interesting to give some thought to these two emotional frequencies which are quite different. Realizing that gratitude feels more like relief or recovery from some sort of "struggle", and appreciation can be a way of resetting as in "pivoting" (see previous post) within any set of circumstances.
Appreciating feels like being in Love with life, an expansive heart opening expression that moves gratitude to a higher energy vibration. But of course feel either emotion as genuine emotional guidance, it is just helpful to realize which is closer to source energy.
This card is from The Money and The Law of Attraction cards by Abraham and Hicks. (click to view entire card)