Changing Roles for Changing Seasons of Life

 Inspired by Shu Yamaguchi’s philosophy, this framework maps the evolution of personal roles and contributions across four life stages—Spring, Summer, Autumn, and Winter. Each stage reflects a shift in concept and engagement, shaped by changing conditions and transitions.

Modeling Based on 山口周『人生の​経営戦略』

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Entity Name	Description
Person	An individual progressing through distinct stages of life and contribution.
Introduction Period	The early stage of life focused on discovering passions and understanding strengths and weaknesses.
Growth Period	A phase of intense work and capital accumulation through active engagement and learning.
Maturity Period	A stage of diversified work, mentoring others, and sharing opportunities.
Decline Period	A reflective phase supporting successors and fostering connections between people.
Stage Transition	The shift from one life stage to another, influenced by internal and external changes.
Change in Conditions	Factors that trigger stage transitions, including social and physical shifts.
Change in Social Conditions	Alterations in societal roles or positions that affect personal engagement.
Change in Physical Conditions	Variations in physical or intellectual capacity that reshape one’s ability to contribute.
Change in Position	Shifts in status or title that redefine responsibilities and influence.
Change in Role	Evolution of one’s function within a group or society.
Change in Physical Strength	Adjustments in physical capability that impact activity levels.
Change in Intellectual Ability	Development or decline in cognitive capacity affecting decision-making and insight.

This framework encourages us to embrace each life stage with clarity and intention, adapting our roles and contributions as conditions evolve.