Really insightful book that shed light on how poor we are at estimating risk and assessing probability. Has significantly impacted the way I make decisions - I now always assume there will be 'unknown unknowns' that I must build into my decision making models and day-to-day thinking.
This is one of the most mind blowing books on economics I have ever read. It makes you think twice about what is generally taken as a given in the realm of economics. Nassim Taleb is a great economic thinker of this age.
One of the best books for self-development I have ever read.