What i actually do is, check my google webmaster account and gather the list of queries with more expressions and less clicks. (LOW CTR). Check the position of the URL and improve that page/post.
How this helps:
When there is good amount of expressions for any query that mean is showing frequently in Search Results. There are a two reasons why people are no clicking that.
-Your Listing seems irreverent
-its on second page.
Under both conditions, you have to improve content/Meta tags for that query.