You've come a long way since writing your first post. They key is to make sure you continue to create high quality and helpful content for your audience where they'll be looking for it. Eventually, they'll come directly to your blog for it.

As you continue to grow, make sure to repeat this process with other niches to attract more users (if possible based on your product and industry). It will get easier there because of all the the hard work you've put in before and the name recognition you'll have started to build for yourself and your business.