#1 rule. Write for readers, not for search engines.
You want your title to grab your visitors attention and make them read the article. Make sure you are also writing high quality, engaging content that visitors will want to read and share. Then you will get lots of organic traffic and backlinks, which will increase your rankings.
You can spend all your time writing content for search engines, but if no humans want to read and share it, your still not going to get the results you want!