The key here isn’t to avoid or even to reduce the total amount of time you spend engaging in distracting behavior, but is instead to give yourself pl… - Cal Newport

Being less available over text, in other words, has a way of paradoxically strengthening your relationship even while making you (slightly) less available to those you care about. This point is crucial because many people fear that their relationships will suffer if they downgrade this form of lightweight connection. I want to reassure you that it will instead strengthen the relationships you care most about. You can be the one person in their life who actually talks to them on a regular basis, forming a deeper, more nuanced relationship than any number of exclamation points and bitmapped emojis can provide.

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.

As email spread through the professional world in the 1980s and 1990s it introduced something novel: low-friction communication at scale. With this new tool, the cost in terms of time and social capital to communicate with anyone related to your job plummeted from significant to almost nothing. As the writer Chris Anderson notes in his 2009 book, Free, the dynamics of reducing a cost to zero can be “deeply mysterious,