Just kidding. Rachelle Gardner really isn't my sponsor. She's an agent who has a fabulous blog geared towards publishing and writers. Her advice is sagely no matter if you're just starting to think about maybe writing a book, or you've been in the game for years.
I was trying to think of a really great way to say that every writer is different, and you should figure out what is the best course of action for you, but then I read Ms. Gardner's blog post today, and it seems she's already said it for me, only better. ;)
So, go forth and read her post. It really resonated with me today, and it might help you too.