Close to the Finish Line!

I don't know what it is, but I can really start out well on a project (especially is the ideas are flowing) and can spend weeks devoted completely to what I'm writing.  And then comes the hiccup.  Something will happen to distract me, and I lose focus.  Then it's really difficult to get back on the computer and finish.  

Right now, I'm 34 chapters into W.t.W.W.Y.N.  That's not an insignificant achievement...but it's not perfect either.  It was about there that I realized I didn't like some of the direction I was going and (to steal a phrase from "Lost") I had to course correct. Now, I seem muddled in not only getting everything in line up to 34 but in finishing it.  I see the end in my mind; I have a pretty good idea of where the story is going.  It just takes a lot of work to get it there.  *Sigh*