What is the Blogging from A to Z challenge and where can I find more participants? Right here.

Quit tweaking words and get on with it! You may find all this feedback and fixation on making the story just right gets to you after awhile. Each word starts attracting scrutiny. Is this really the right word? Should I delete every instance of "very"?
My roadblock usually hits around the time I'm doing a final pass before sending the story off for critique/beta reading. That point where I've been fixing little things here and there for a couple weeks and I'm beginning to notice when doing find (Because I do a lot of editing that way when hunting down sections in a full novel .doc) that I've used certain words multiple times. Now, I know this doesn't seem like a major issue. Of course words are used more than once in a 80-120K word novel. But when you look for the word "push" and come up with five instances of characters pushing hands through their hair, you begin to doubt yourself and consider that just maybe you had that action on the mind more than you thought. Incidentally, this is also how I discovered that in one book everyone jumped up from their chairs instead of simply standing and a lot of other little nitpicky fixations.
So yes, some tweaking is a good thing, but when you find that you can't stop going over the first paragraph of chapter one to get it juuuuuust right, it might be beneficial to take a break, send it to those other eyes and get another opinion. You can't move forward if you keep picking at it. And its hard to publish anything without moving on.
This also applies to the another issue I've seen a lot of writers (including myself with one book) fall into early in the process. That part where you do get feedback and everyone hates your opening chapter(s). And then, instead of moving on to find the point in the book where readers do start connecting so you know how to fix it, you pull everything, and spend months re-writing those opening chapters over. And over. And then send them off only to find that they're still not perfect. So you pull them again. The next thing you know, you've wasted six months on three chapters and your readers are so sick of the many incarnations of the opening, its like pulling teeth to entice them to read the rest of the book.
Just write the damn thing the best you can, clean it up the best you can, and send the whole thing off to trusted eyeballs. See what they have to say about the overall piece before sinking your time and energy into a major rewrite. That feedback will help direct your efforts rather than banging your head on the desk while you second guess yourself into hating your own novel.
Do you get hung up on tweaking the little things?