Theres no quick fix sadly, unique fresh content regularly, submitting to directorys, semantic valid coding, facebook/twitter social netoworking sites, youtube etc. All help to drive traffic to your sites.
more good unique content = more money you can use adwards to get visitors to your blog. don't ever use blackhat SEO, this will cause adsense blocking your account. Use SEO to get high rank at search engines.
make sure you site have good content first...and then got tons of quality backlinks to your site..... the best traffic is for Search Engines....make sure also your website is SEO optimize..
Unique content is the key to increase but seo is also more important part for getting better traffic for any site. If we are talking about adsense then place the ads in upper of the page and match color with your page.