Why do we feel lonely even when surrounded by people? Because we haven't found our just-right solitude.

Why learning kodoku skills is essential for longevity, fulfillment, and navigating modern life.

Solitude is, in truth, the greatest freedom. Life is inherently a solo journey. Rather than being trapped by loneliness, cultivate the power to thrive alone and enjoy just-right solitude.
PART I: DISCOVERING YOUR JUST-RIGHT BALANCE
Chapter 1: "Just the Right Amount of Alone Time" Will Change Your Life
Chapter 2: The "Solo Life" Recommendation—Not Grouped, Not Restricted
PART II: BUILDING YOUR SOLITUDE POWER
Chapter 3: Increase Your "Solitude Power" by Reducing the Feeling of Loneliness
Chapter 4: Show "Solo Spirit" in Family and Groups
PART III: KODOKU FOR THE LONG LIFE
Chapter 5: How to Acquire the Skills to Go Down the "Slope of Old Age"
Chapter 6: Become a Master of Solitude by "Solo Stand" in Old Age