Over at Women on Writing, there is a wonderful piece on how to focus your writing. I love tangible tips and charts, but that is just me :)
I recall that a couple of years ago I was fixated on becoming a creative non-fiction writer. I went and saw Lee Gutkind, the creative non-fiction guru, speak at the Texas Book Festival and I started reading his how-to books. I have since let that fall by the wayside as my writing has developed, but I still think about it from time to time and wonder if it is something to explore.