In your optimization efforts, it’s wisdom to use the full range of relevancy influences to impact your rankings. Far too many people put much of their efforts into only just “a few” influences that they “think” are most important.
Very stable, long term, top rankings come from using a well-defined balance of the basic essential SEO methods. One of the major challenges for many people, is that they have never really had any formal, structured training in search marketing. For others, the challenge is staying up to date with the most recent changes.