If your site is new, it can take a while for search engines to recognize the new content. As your site grows, though, search engines will visit it more frequently and make quicker updates to title and content snippets. In your head tag, you can set title equal to what you want your search engine link to read as, and you can set the meta description to your recommendation for the short summary that appears under that. For a new site, it could take a week or two for that information to get picked up by the search crawlers, and possibly even a few more days from that for the search engine database to update and propagate through the web.
So, I know how hard it is, but try to be patient for now! Focus on creating killer content - because when it comes time to start promoting your site, you'll definitely need it!