What Kind of Life Has It Been

I started developing an interesting metaphor the other day. As some of you know, I write a story online. Every chapter is available to my small but loyal readership as I finish it. The funny thing is, I didn't come up with a premise first. I'm writing this thing by the seat of my pants.
ANd what I was thinking the other day is that this sort of writing is like driving a big truck down a narrowing road. At first it was the easiest thing in the world, but it's getting harder and harder. The road is narrowing, it's getting harder to see what's in front of me, and obstacles spring up off of nowhere. Sometimes, in an effort to dodge an oncoming continuity error, I'll swerve into a long detour that will take me several chapters to get through. Once I've made a decision, taken the story a certian way, I'm committed. It's a one way street; I can't turn around. And if it happens that I'm headed to a dead end, the whole journey is wasted and I'm stuck. The more info I add to the story, the more cargo I add to the truck and the harder it becomes to dodge plotholes. If I succeed in the end, I'll deliver a good story to my readers. HOpefully I won't run off the road before that happens.