I was extremely eager for the book because I thought I would relate to it: to missing your teacher, the reuniting and the mentoring, and I did in the beginning but it turned out to be just a few pieces of advice from a teacher to his student, nothing else. 
 Except for the background stories, It has no plot, poorly-written (could have been way better), and there's no character development. 
 To me, the book was simply some 'helpful' pieces of advice. 
 Take it as a quick read and you won't regret it -completely. :)