What is the most satisfying growth arc of a character you've ever read?

I've been thinking a lot about character growth recently, especially as I finally finish my own series of Sangwheel Chronicles. Not the physical growth like learning to be better with a sword or magic or whatever, but the actual character growth, like what a character learned in the course of the story and how they changed.

I think one of the most satisfying growth arcs ever was Jill from the Deverry series by Katherine Kerr, the first 4 books. Because the books involve reincarnation and you follow Jill across multiple lives, it is deeply satisfying when she finally reaches the points where she accepts her destiny.

At the start of the series, Jill is basically afraid of magic and very much about her relationship with the 2 men, but at the end of the series, she accepts that her destiny is to learn dweomer, to be a dweomer master and her own person. In the same series, Nevyn's growth is equally satisfying over the many, many lives that Jill leads and he stays in his one life. It always made the series stand out for me as really satisfying read.

So, what's your favorite or most satisfying growth arc?