Included in the book are many examples of how writing quickly, getting in the zone, and trusting your Muse produce quality fiction. I was amazed at how Michael Moorcock wrote his early books. There is also a wonderful story of Ray Bradbury and his classic work Fahrenheit 451. I was surprised at how quickly such enduring classics were created.
Denney provides tips for breaking writer's block and eliminating needless work. My favorite piece of advice for writing quickly and freely concerned focus on the main plot line of the story (especially during the first draft). I learned that subplots can lead to dead ends (which I have experienced in my own writing). For some reason, this particular section was liberating. I could almost feel myself writing faster (and I am already a quick writer).
As a "cliff-jumper" or "panster" I have grown fond of plotting, outlining, and story structuring. Denney discusses the benefit of planning a story; at least enough fend off writer's block. Much of the message in this book concerns finding the right mixture of narrative push methods (cliff jumping or writing by the seat of your pants) and planning.
Denney has clearly studied successful writers and done a considerable amount of writing fiction and non-fiction. Writing in Overdrive relies on many stories of famous writers. These were entertaining and often inspirational if nothing else.
I look forward to reading other books by Jim Denney.