One question I love being asked as a business book writing coach is: "I’ve got seven topics I could write about. Each is brilliant and would make the world a better place. How do I decide which is the killer idea?" If this sounds like you, don't worry, it’s a common stumbling block. The good news is, you have a lot of ideas, and my job is to help you determine which is best.
There are 53,524 books on writing skills listed on Amazon, which tells you this is a very popular subject. However, you can read all 53,524 books and still not get your book written if you don’t apply your seat to the chair and your fingers to the keys.