how to write a book

Writing a Book Here Are 4 Steps You Must Take

Writing a Book? Here Are 4 Steps You Must Take

When you start working on a project as significant as a book, you usually have a lot of questions. What should I write about? What if I leave out something important in my topic? What if I write too much, and no one even finishes half of the book? How do I make sure the topics flow? 

In short, how do I know it will be good?