I like what you're saying and would do a big cut & paste of all the comments above - if it helps, if it makes some sunshine in the gloom, that's awesome...But I will take a moment to fly the flag for those who are in the other camp.
When I was little, my strong-will was bulletproof. If dad's giving me the "Say 'thank you', Ragdoll", I'd purse my lips together and give him the "try and make me" glare. If mum's telling me to eat my porridge or go without brekky, no problemo, I'll hang out till lunch & let her deal with the guilt of having a hungry child in the house. My strong will was already on steroids:sneaky:
As for gratitude, there's a lot of emotions my T wants me to take on board (anger, grief, etc), but for me we're actually trying to dump the gratitude because I've already got that in spades: grateful I was abused, and reeeally grateful to my 'abuser', who I see as a kind and generous man who went to great lengths to help me understand the kind of toxic person I am, and how to survive the life that I was due for. Gratitude's not always all it's cracked up to be.
Like I said, different strokes for different folks. But I wanted to add that in case anyone else was reading that OP like me - my trauma-brain could've happily turned that message into "See? You're supposed to be grateful, your T doesn't know what he's on about".
Awesome how we can take something as simple as gratitude and make it really complicated & individual!