In rule 12 of his new book Beyond Order, Jordan Peterson talks about gratitude. I'm going to summarize my understanding of his definition of gratitude:
From that book, page-299-300:
"..., "Why would such a spirit exist? Why would it be a part of each of us?"
The answer appears to be partly associated with the powerful sense that each of us shares of our own intrinsic mortal limitations, our subjugation to the suffering inflicted upon us by ourselves, society, and nature. That embitters and produces a certain self-contempt or disgust, inspired by our own weaknesses and inadequacies (and I am not speaking here yet of immorality, merely of our intrinsic and terrible fragility), and also by the apparent unfairness, unpredictability, and arbitrariness of our failings. Given all these disappointing realizations, there is no reason to assume that you are going to be satisfied or happy with yourself, or with Being itself. Such dissastisfaction-such unhappiness-can easily come to reinforce and magnify itself in a vicious circle. With each step you take against yourself or others as a consequence of your unhappiness and resentment, there is more to be ashamed of, and more reason for self-directed antagonism. It is not for nothing that approximately one person in five engages in some form of serious physical self-harm in their lifetime. And this does not include the most serious act-suicide itself (or the more common tendency toward suicidal ideation). If you are unhappy with yourself, why would you work in your best interest? Maybe something vengeful would emerge from you, instead; maybe something capable of justifying itself while it metes out hypothetically deserved suffering, designed to interfere with your movement forward. If you conceptually aggregate and unite into a single personality all that opposes you in you, all that opposes your friendships, and all that opposes your wife or husband, the adversary emerges. That is precisely Mephistopheles in Goethe's play-the devil himself. That is the spirit who works against-and that is exactly how he describes himself: "I am the spirit that denies" Why? Because everything in the world is so limited and imperfect -and causes itself so much trouble and terror because of that-that its annihilation is not only justified but ethically demanded. So goes, at least, the rationalization"
Now, this spirit feeds on bitterness. The more embittered one becomes, the stronger this spirit in him/her becomes. So, we need to become less bitter by being grateful (because things can get much worse, and no one is entitled to the good one receives because reality was plausible to have been otherwise) and by being courageous and trying to make things better.
Is my understanding of his rule correct?
I will include the name of the rule and the names of the sub-chapters so that you can get a sense of the general overview of this rule/chapter:
Rule 12: Be grateful in spite of your suffering
- Down can define up
- The Mephistophelian spirit
- Courage-but superordinate, love
This might help you in answering the question.