How to optimize competitive keyword

I have been struggling past few days with one particular keyword. I have done SBM, Article Submission, Forum posting but nothing fruitful is happening kindly help me in this.

 

Hello,

SEO in same style high or low competition....

Making good quality high PR back link....

 

Hi,
Go for SMO, this will bring traffic to your site and keyword ranking in SERPs.

 

do social bookmarking & networking to get traffic to your site also get good quality backlinks to your site.

 

Hi,
Not only keywords but also the content you are using to promote your site must be relevant to the site like websites are of niche category, content must be update and relevant.