The most successful and fulfilled people share a common trait that has nothing to do with hustle — cultivated inner stillness.

The short version: a quick read to help you decide. Not a replacement for the book.
Closing Holiday's Stoic trilogy, stillness — not more hustle — is the missing ingredient behind sustainable high performance.
Stillness is mental clarity from a disciplined mind, spirit, and body working together — neglecting any one undermines the others.
1. A quiet mind is a competitive advantage.
Great decisions came from a place of calm, not urgency.
2. Limit inputs to protect your ability to think.
Constant consumption crowds out original thought.
3. Your body's state affects your mind's clarity.
Sleep and exercise are prerequisites for mental performance.
4. Deal with corrosive emotions directly, not through distraction.
Working through disruptive emotions rather than numbing them.
5. Presence with people and moments is a discipline.
Genuinely being present is an active practice.
High achievers whose relentless drive is starting to cost them clarity, health, or relationships.
Principle: A quiet mind is a competitive advantage.
The action: Sit quietly for 10 minutes before your next important decision.
Principle: Limit inputs to protect your ability to think.
The action: Remove one recurring information source for a week.
Principle: Your body's state affects your mind's clarity.
The action: Commit to one sleep or exercise habit for 2 weeks.
Principle: Deal with emotions directly, not through distraction.
The action: Write honestly about the source of a recurring negative emotion.
Principle: Presence is a discipline, not an accident.
The action: Have one conversation this week with full attention, phone away.