I'm going to assume that the books on Amazon authored by Raza Imam are your books. If so you have a massive disconnect between your books and your offer.

Look at the book titles and ask yourself 'why would I think that someone that bought this book would want to be an author?'

Also, I want to add.. nothing personal but I don't have a trust that you successful entrepreneur after visiting your site. PixaBay pictures, bad fstyling of the texts, etc.. I haven't download your document, but if it doesn't bring a real value for your subscribers I don't wonder why your efforts for selling have such minimal effect. So, my recomendations, except of re-positioning for your offer, improve quality for your sales materials.

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I think your entering into a marketplace that is littered with so many people doing the same thing, many of them with tons of legit credentials and proof to back them up.

You really are going to have to offer people something special if you want to stand out in the big crowd.