Book marketing is a requirement for an author, no matter who publishes your book.
If you are not yet well-known and no one knows the title of your book - then your future customers aren't searching for you on the internet.
How do you get them to discover your book? It's easy. The concept is called Associative Marketing and publishers have been using it since time began to sell books. As an author, you also need to tap into the system so that you can significantly increase your book sales on the internet. It is explained in great detail in the Book Advanced Book Marketing.
It's not a matter of getting them to notice you and your book, it's putting your book where your customers are already searching for answers, and everyone wins...