The best way to write a compelling book in your niche is to read books by other authors who write in a similar niche. (birdsofafeatherpress.com)
They release new world books written by other authors in several group launches in a year. (jordandane.com)
You should definitely read work by other authors in your area: if you're writing a thriller, read thrillers; if you're writing a sales page, read sales pages. (aliventures.com)