First you should know what you are promoting. What kind of blog do you have?
You can ask your family and friends what's the first question that comes in their mind when hearing your blog? From there, you will know what do readers look for in such content.
You can make a longer keyword that is significant. In google search, the more it is long-tailed, the fewer the competition in search engine.
Those are just few tips I know. I hope it could help you grow your blog visit.