You've given yourself a challenge when you decide to write a book.
I think it's the art form that looks easiest. After all "it's just words"; how hard can it be. That very simplicity is the challenge. It's just words. No pictures, no sound, no costumes, no actors, no musicians, no frame in a gallery, no special effects wizards at Lucasfilm to build on your artistry to make it complete. Just words.
Every time you read one of my posts about nitwiticisms, or I sound cranky as hell, remember, I would not have a job doing work I love were it not for you.
We, the non-writer people of publishing, don't say that often enough. We certainly add value. We certainly help you. In the end however, this entire industry is an upside down triangle and the point we all balance on is your writing.
We need your words, and we need you to write them. Don't ever forget that.