The vast number of quick-fix products and services available today have led people to expect immediate results in almost all areas of their lives. But, there is no quick fix when it comes to buyer behavior.
People take their time making decisions about how to spend their money.
It is not enough for them to see you or hear about your book one time. People have to be reminded about it by being exposed to your message repeatedly. And that takes time. I think I've heard of that book before. I think I've heard of that author before.