There are several layers of significance wrapped up in Writing My Wrongs' double meanings:
Shaka is writing the story of the wrongs done to him and the wrongs he's done in this book.
Shaka's writing in his journals was one of the things that led to him righting the wrongs he's done.
This book itself is another step in righting those wrongs.
Pretty clever, huh? Shmoop loves a good pun, and the ones here are really smart. It all gets across one of the main messages of the book: writing about your thoughts and experiences can help you get the bad stuff out, do something good, and make a difference in the world.