This is a problem that many people run into when creating a website. What's the best way to create powerful content that results in an increase in conversions (i.e. higher sales)?

In my experience, it's best to look at the way you have structured the content, make sure that it is voiced appropriately for your audience, and that you have goals around what you intent do do with your website's content.

The creation, structural design, and attempt at influencing action with copy is called information architecture. Understanding the principles of information architecture (research, discovery, design, develop, test, and grow) will help you more than anything else when learning how to make your content more effective.

I would suggest reading this article:
http://www.uxbooth.com/articles/complete-beginners-guide-to-information-architecture/

It highlights the basics of information architecture and will help you on your journey.

If you have additional questions or are struggling on a particular concept you're welcome to follow up with a phone call. I would love to help you in any way I can.