I am, actually. As I told Jillian a bit ago, I write my best when I've got guidelines to follow. Choosing my own guidelines is closer to not having any guidelines, since I can always change what I want to do at any time. Having someone else choose a theme for me helps me write a lot faster, since my creativity is then focused in a general direction. And I have free reign over that entire direction, but I keep it to the theme that I was given.

It's incredibly refreshing. You should try it.