How to extract the good from a bad situation?

I’ve been doing some reading lately about healing past traumas and in the course of it, I’ve come across the concept that even in the worst possible circumstances, there can be benefits that a person extracts from those traumas.

I’ve had some trouble doing that about certain aspects of my past experiences and so I’m asking about how that might be done. I noticed that these books never addressed that part of it, probably because everyone’s benefits would be different, even with the same trauma.

What good can come out of an assault, let’s say, for the assaulted person? Or the benefits a person gains after being beaten or otherwise physically abused for a long period? How can these incidents be re-framed?