Gratitude welcomes what we are given. It doesn’t know any stories about how it should have been. To talk about gratitude is also to talk about what prevents gratitude, about resentment and bitterness. Resentment and bitterness are the residue that comes from dashed expectations. Since the world doesn’t fit our stories, there is a tension where I expected life to be more favorable to my hopes than it has been, or feel that the world has not bothered enough with me. That bitterness sticks in the body and the mind, so that the mind reruns its painful stories and the body stores them in awkwardness and discomfort.

John Tarrant, Practices of Gratitude.