I have been working on my first novel for over a year now and its about halfway finished. In the past when I worked on my novel I wrote the material and polished it to a state that could be considered 'submittable' to a publisher/agent/whoever. Realizing that it would take me another year, possibly more, to finish the novel I have been powering my way through the chapters trying to make a rough draft of the story that can be read from beginning to end. Basically the first half took me one year to write, and I expect to write the second half in two months. There is a sharp contrast in quality from the first chapters, and the chapters I am writing now. I'm worried that if I continue down this path I will write myself into a corner and spend A LOT of time rewriting chapters over and over, when I should have taken the 'slow and steady wins the race' approach. Any advice?