Marcus advocates for intentional living through selective action rather than busy productivity. True tranquility comes not from doing nothing but from doing fewer things with greater focus and excellence. This requires the wisdom to distinguish between what's merely urgent and what's truly essential. When we eliminate non-essential activities, we create space for deeper engagement with what matters most. The 'double satisfaction' comes from both the peace of simplicity and the fulfillment of mastery. It's about depth over breadth, quality over quantity, meaning over motion. This ancient wisdom anticipates modern insights about focus, flow states, and the dangers of multitasking.