High Performance Habits by Brendon Burchard examines six habits for high performance using stats and data from a large study conducted on the routines and workflows of high performers.
Richard Koch's The 80/20 Principle is based around his study of The Pareto Principle. Applied mostly to a business context you could look at it as 20% of your actions or clients create 80% of your results.
Anders Ericsson's book Peak examines how we can gain excellence through consistent practice instead of an ability people are either innately born with or not.
The author, Atul Gawande, based the idea for the book The Checklist Manifesto from his work being a general surgeon. The Checklist Manifesto looks at how a simple checklist can drastically reduce human error in complex situations or while doing complex tasks.
Derek Draper's Create Space is based on a collection of tools, ideas and principles he uses in his business as an international business coach and practicing psychologist.
Laura Vanderkam's What The Most Successful People Do Before Breakfast is all about productivity and your morning routine. Laura helps you lay out a plan to fine tune your time management skills and find more time for the things that matter.
Laura Vanderkam's Off The Clock is full of practical productivity tips for getting more out of a busy schedule. Backed by science as well as personal experience, you can find out why so many people feel they have so little time.
Josh Davis's Two Awesome Hours examines the link between your mental energy and productivity.
Leo Babauta's The Power Of Less looks at what he calls productive minimalism. How to focus on changing your behaviours and habits to help ensure successful long term changes.
Essentialism by Greg McKeown examines how to accomplish better results by doing less. Practical solutions and advice on setting priorities, learn to eliminate the unnecessary and cultivate the things that keep you happy and fulfilled.