You need your own philosophy for integrating deep work into your professional life. - Cal Newport

You can’t, in other words, build a billion-dollar empire like Facebook if you’re wasting hours every day using a service like Facebook.

This new science of performance argues that you get better at a skill as you develop more myelin around the relevant neurons, allowing the corresponding circuit to fire more effortlessly and effectively. To be great at something is to be well myelinated. This understanding is important because it provides a neurological foundation for why deliberate practice works. By focusing intensely on a specific skill, you’re forcing the specific relevant circuit to fire, again and again, in isolation. This repetitive use of a specific circuit triggers cells called oligodendrocytes to begin wrapping layers of myelin around the neurons in the circuits — effectively cementing the skill. The reason, therefore, why it’s important to focus intensely on the task at hand while avoiding distraction is because this is the only way to isolate the relevant neural circuit enough to trigger useful myelination. By contrast, if you’re trying to learn a complex new skill (say, SQL database management) in a state of low concentration (perhaps you also have your Facebook feed open), you’re firing too many circuits simultaneously and haphazardly to isolate the group of neurons you actually want to strengthen.

True missions, it turns out, require two things. First you need career capital, which requires patience. Second, you need to be ceaselessly scanning your always-changing view of the adjacent possible in your field, looking for the next big idea. This requires a dedication to brainstorming and exposure to new ideas. Combined, these two commitments describe a lifestyle, not a series of steps that automatically spit out a mission when completed.