To master a new concept in math, science, or a foreign language, it typically takes seven or eight practice sessions. - Adam Grant

people often become attached to best practices. The risk is that once we’ve declared a routine the best, it becomes frozen in time.

If knowledge is power, knowing what we don’t know is wisdom.

In every field, even the most eminent creators typically produce a large quantity of work that’s technically sound but considered unremarkable by experts and audiences. When the London Philharmonic Orchestra chose the 50 greatest pieces of classical music, the list included six pieces by Mozart, five by Beethoven, and three by Bach.14 To generate a handful of masterworks, Mozart composed more than 600 pieces before his death at thirty-five, Beethoven produced 650 in his lifetime, and Bach wrote over a thousand.