There is no doubt that directing television has helped hone my directing skills. What television teaches you is to be efficient and to think on your feet. You have to adhere to strict deadlines and budget constraints. ↗
The deadlines are much, much longer with books. When I was a reporter, a lot of times I'd come in at 8:30 a.m., get an assignment right away, interview somebody, turn the story in by 9:30, and have the finished story in the paper that landed on my desk by noon. ↗