The book is Outliers, the author is Malcolm Gladwell. The review is here.
A great bit is:
"Most successful people also have a phenomenal ability to consciously focus their attention. We know from experiments with subjects as diverse as obsessive-compulsive disorder sufferers and Buddhist monks that people who can self-consciously focus attention have the power to rewire their brains."
I intend to read this as soon as I can. A review will follow.