The book is specifically called "A Ninja of life" and not "A Ninja in life".
What did you learn? The reader is given the opportunity to respond to "Food for thought" and "What did you learn?".
Food for thought; and 4.
Fun fact; 3.
Lesson/s learned; 2.
At the end of each story, there is a section which contains reflective material: 1.
The idea being that "of" emphasizes all aspects of the person\'s life, as opposed to one area in his life.
The book is specifically called "A Ninja of life" and not "A Ninja in life"