What is the author's tone in To Own a Dragon: Reflections on Growing up Without a Father by Don Miller?

The author writes the whole book subjectively. He shares many personal experiences and flashbacks. The tone makes the book personal to the reader. If the reader shares Miller's lack of a father, the book reads as a letter or advice column. Miller writes that the tone may put off some women readers. In a few instances, the material applies uniquely to males. However, the book holds much wisdom that applies to any person, regardless of gender.