This is the follow up work to Pressfield's championed book on creativity, The War of Art: Break Through the Blocks and Win Your Inner Creative Battles. The purpose for Do The Work is to be a more practical guide to creativity, but it just doesn't work. The best parts of Do The Work are simply rehashed bits from The War of Art. There is value in Do The Work; much value in fact. But, The War of Art is the better book and has 95% of Do the Work's best information in it already, plus much more. Do yourself a favor and pick up The War of Art instead.
For a book on the practical aspects of creativity Thinkertoys: A Handbook of Creative-Thinking Techniques (2nd Edition) is still far and away the best out there.