wow, what an interesting sentence, I hadn't heard that word before either. but I particularly like the way he is categorising it as having various forms. "an angry form of anhedonia".
My father instantly jumped to mind. Yes, just like Rawat, was the follow on thought.
I remember my mum expressing her puzzlement when they were around the age we are now - she said he had everything in the world to make him happy, three good children and a nice home, and he never was.
of course her family life was so different to his. she loved us and we loved her back. with him it was different. He's much nicer now he's been dead a while.
the most miserable thing a narcissist does to themselves and their family is to hide their true feelings.