If you update your blog regularly with original quality content and finally you get tired because your blog performance in Google is not as you want it. What to do?

First, improve the meta tag description for the blog.
Second, create different meta tag description for each and every post.

More on this just listen to what the Google Webmaster Team has to say:

Using identical or similar descriptions on every page of a site isn’t very helpful when individual pages appear in the web results. In these cases we’re less likely to display the boilerplate text. Create descriptions that accurately describe each specific page. Use site-level descriptions on the main home page or other aggregation pages, and consider using page-level descriptions everywhere else. You should obviously prioritize parts of your site if you don’t have time to create a description for every single page; at the very least, create a description for the critical URLs like your homepage and popular pages.

The first point is easy. Google it on how to create meta tag description, you’ll find it right away.
The second part is also easy if you have a self-hosted wordpress blog. Just use Platinum SEO Pack plugins and set the tag or category as your automatic meta description of any particular post / article.

However, if your blog is run on blogger.com / blogspot you have to use meta description on each post manually.
Some tutorials on how to create a different meta tag for different post/article in blogger.com / blogspot can be found in the following links:

• Hack by Bloggertricks
• Metatag for Blogger
• Informationtypes

Wish you luck!