Working at the edges of a skill to achieve greatness.
Angela Duckworth’s ”Grit” endorses Deliberate Practice. This it has in common with (and specifically namedrops) Malcolm Gladwell, the author of ”Outliers”, perhaps more commonly known as the “The 10,000 Hour Rule” book. It relates to Grit because deliberate practice is an act of Grit. People who are outliers are almost always Gritty people. Deliberate Practice is not usually pleasurable by itself, but that which yields results is inherently satisfying (see: Type 2 Fun) - so that Deliberate Practice is ultimately a worthwhile endeavor
Making Deliberate Practice into a Habit is a good way to ensure steady and long-term progress toward whatever skill you hone.