The Power of Less by Leo Babauta is not a mystery novel. It is a short time management tome based on the principles of Buddhist mindfulness.
The book advocates that you simplify, focus, and do your best to "be in the moment." Then it tells you how. Its general approach applies to life and business, but it could be used to give structure to our working lives as writers too.
Our son suggested the book. He is a research scientist who has to structure his own time, set his own goals. He has found Babauta's approach helpful.
This is a short book which practices what it preaches.
If you are looking to put some order in your life or in your writing process, this book might be just what you need.