Jean Didier's Key Ideas from Hyperfocus
by Chris Bailey

Simplifying what we focus on in the moment may feel counterintuitive: when we have so much to get done, our natural impulse is to focus on as much as possible. 

Compounding this is the fact that the brain’s prefrontal cortex—the large part of the forebrain that lets us plan, think logically, and get work done—has a built-in “novelty bias.” Whenever we switch between tasks, it rewards us with dopamine—that amazing pleasure chemical that rushes through our brain whenever we devour a medium-sized pizza, accomplish something awesome, or have a drink or two after work.