DEEP WORK by Cal Newport: http://calnewport.com/books/deep-work/
Great book on the importance of working without interruption to do work that matters. Newport argues that most of what we do today is what he calls “shallow work” which is filled with interruptions. He calls on us to create long uninterrupted periods to create valuable work.
I’d read his earlier book titled “So good they can’t ignore you” and liked it. This one was a great follow-up.