One of my favorite moments in the book was while Shallan and Kaladin were in the chasms, where they are having the conversation about how "spoiled" Shallan had been. When he looks into her eyes and sees that she has seen the same sort of horrors as he has and is just as broken, yet she smiles through the pain. This moment to me is a major turning point for Kaladin, he realizes that just because his life has been hard doesn't mean that he has to be a complete chull to everyone.
I also absolutely loved multiple scenes that have already been mentioned