To simply wait and be bored has become a novel experience in modern life, but from the perspective of concentration training, it’s incredibly valuabl… - Cal Newport

High-Quality Work Produced = (Time Spent) x (Intensity of Focus)

The pseudo-worker looks and feels like someone who is working hard — he or she spends a long time in the library and is not afraid to push on late into the night — but, because of a lack of focus and concentration, doesn’t actually accomplish much.

Deep Work: Professional activities performed in a state of distraction-free concentration that push your cognitive capabilities to their limit. These efforts create new value, improve your skill, and are hard to replicate.