Collect questions from conversations, workshops, client feedback or community discussions. Group similar questions, then ask which ones your book can answer responsibly. A question may become a chapter, a short section or a useful example that clarifies a larger point.
Do not promise a solution beyond the manuscript’s scope. State what the book can and cannot do, and identify when a reader should seek qualified support. This approach creates practical structure while respecting the limits of your expertise and the needs of your audience.