Helpful book, mainly for the firm recommendation of practice writing ("morning pages"), preferably daily. The more you do practice writing, the easier it will become and the more easily your ideas will flow. I started getting new ideas for my novel almost immediately after doing a few days' worth of practice writing.
The rest of the book is mainly motivation and encouragement for people who want to do creative things but either just haven't done it or have been discouraged. That isn't really my problem as a writer, so I just scanned those sections.