What will help make my book sell

• Most successful marketing campaigns are focused on a high concept book.
• The second step we noted is that successful marketing campaigns usually have a book with a great cover – which is important to remember when dealing with your publisher.
• The third important step is that Wal-Mart and Barnes & Noble buy your print book, and you get highlighted somewhere on Amazon as an ebook.

What has to happen to make my book sell?
What else will help my book sell?