A friend of mine has written books on how to start a revival, and has travelled the world teaching on this subject, but he tends to dance up a revival which soon fades. My sense is that he should be teaching people how to restore and maintain a relationship with God and what that involves and what the outcomes of being in a relationship with God means and can lead to, i.e. possible pain and suffering for Christ/God and the Kingdom of God.
If you teach people how to restore their relationship with God and also how they maintain that relationship with God for the period of their lifetime, then a revival will occur when a group of like minded people come together in relationship with God and the fruit of their relationship will be evident within their interactions with the community in which they are living. This type of teaching can be considered to being about the restoration of the "Church."
The Book that you intend to write will evolve as your relationship with God evolves and the initial book will demand that you update your first book to reflect the life experiences that will you have during your life to reflect the changes that will occur as your relationship with God deepens and matures.
Start by tell you story of how you restored your relationship with God and then continue telling your story of how you have gone about maintaining that relationship with God so that it has not faded but grown into a deeper relationship with God as your have experienced life and the challenges that have/will come your way in your walk/journey with God by your side.
No one can take offence at your story, but they will take offence if you write your book if it seems that you are writing your book from a position of superiority rather than from a position of humility.
Shalom