Writing quality and relevant content
When you have found a good keyword for your topic, you can start writing. As the saying goes 'content is king' because content is the most important step in ranking high on google.
This is so because google uses a combination of tools to rank a page and visitor behavior is one of those tools. I say so because a while back, I wrote a review on hot mom stroller and ranked really high for the keyword hot mom.
People who were looking for information about hot mom landed on my page and press the back button faster that you could say wait. Weeks later, my ranking for that keyword went from # 3 to # 295.
What happened you ask? Well, google realized from visitor behavior that my page did not address the hot mom problem because my bounce rate for that post was 100%; so they dropped my page's ranking for that keyword until they stop pulling it all together for that keyword.
My ranking however for the keyword hot mom stroller improved from #36 to #11 and then #6 during the same time my ranking dropped for the hot mom keyword.
So, if your content is great and relevant to the keyword you use, people will hang around to read it because it addresses their problem and google will reward you. If on the other hand, it is poor and people bounce off a lot you will be penalized.