Another question I'm supposed to address in the online presentation is "The Most Important Quality A Writer Needs." Creativity, of course, springs to mind, but I'm going with Discipline. I know several people who are more creative than me, and they're always saying they're going to write a book someday, but they start and then abandon the project or never start. Having the Discipline to continue is the only way to get a project done. It's not easy to sit in your chair in front of your computer after day after day after day, but that's the only way to get the words, scenes, chapters, books.
And equally important is Belief. You have to believe in your words. If you're just writing for yourself -- say, a journal or diary -- then maybe belief isn't as important. But if you're writing for publication, you have to believe you have something to say that other people will want to read. That belief has to be strong enough to carry you through setbacks, criticism, writing blocks, and other disappointments.