Writing a book, regardless of the topic, takes a lot time. But anyone given enough time-and assuming they are literate-can write a book. Writing a bestseller, now that is a lot more challenging. Most people are not even capable of writing a book that someone other than themselves would read. A bestseller requires the approval of a very large group of people.
Instructions
1. Find an original idea or creative approach to an existing topic. A business book is marketed to a very discerning audience of highly intelligent people, so for it to be successful it must be a new idea; you can't just talk about investing the same way everyone before you has, or you will not have a book that will sell. You can, however, draw new conclusions about old data.
2. Succeed in business. Your book needs credibility in order to become a bestseller. This requires that the author has succeeded in business. The buying public wants to know that the advice or ideas in the book have been successfully applied to the real world. They want to know that they can use them to achieve success.
3. Write the book; this entails more than just putting words down on a page. Business people as a rule don't like to spend an excessive amount of time on any one task. This means that in a book they are looking for clearly defined answers delivered succinctly and without unnecessary fluff. However, do not assume that you can just present facts and bare bones sentences. The book also has to be interesting enough to read so that it doesn't put the reader to sleep.
4. Promote your book, as one can't just be content to allow simple market forces to compel your book to bestseller status. You might want to do a simple book-signing tour, or you might want to arrange a series of seminars and speeches; but either way you need to tell people why they should buy your business book instead of all of the others. Once you have them convinced that the book will change the way they do business for the better, they will buy it in droves.