HOW do people do it?!

Sometimes I really hate reading peoples blogs, tweets and Facebook statuses...they end up leaving me feeling like such a failure.  I can never seem to find enough time to get to everything that I need to or that I want to.  HOW do they do it?  I find myself frustrated  more times than not because I can start something but then have the hardest time actually finishing something.  Is there a secret to balancing things that I just haven't figured out yet?!