Dr. Leahcim Semaj
Organizational Psychologist | Author | Social Philosopher | Management Consultant

Aging is inevitable, but it doesn’t have to signal the end of productivity or creativity. With advancements in healthcare, better nutrition, and the power of exercise, we now have the tools to redefine aging and extend what I call the “age plateau”—the period of life where we remain highly creative, productive, and impactful.

The Evolution of Life Expectancy

Historically, life expectancy was shockingly low. In 1889, when German Chancellor Otto von Bismarck introduced the first social security system, life expectancy was just 45 years. The retirement age was set at 70 (later lowered to 65), but only 3% of the population lived that long. Since then, life expectancy has soared. By the early 1900s, it reached 50-60 years, climbing to 60-70 years by the mid-20th century and 70-80 years by the late 1900s. Today, it ranges from 72 to 84 years globally.

This extended lifespan is not just about adding years but about improving the quality of those years, creating new opportunities for growth, creativity, and productivity, even in later life.

Extending the Creative and Productivity Age Range

The concept of an “age plateau” has evolved dramatically. In earlier centuries, productivity and creativity were often limited to the prime years of 20-50. However, with improved healthcare and societal shifts, this plateau has expanded to include individuals in their 60s, 70s, and beyond.

Prominent late-career innovators exemplify this change. Ruth Bader Ginsburg continued her groundbreaking work well into her 80s, while Clint Eastwood, at 94, still directs movies that captivate audiences. Even The Rolling Stones, with members in their late 70s and 80s, remain iconic performers. These examples remind us that aging is not an obstacle to achievement but a new stage of opportunity.

Several factors contribute to this extended age plateau:

1. Improved Health: Advances in medical technology and public health enable older adults to remain active and vibrant.
2. Increased Lifespan: Longer lives provide more time to refine skills, accumulate knowledge, and make meaningful contributions.
3. Cultural Shifts: Society is increasingly recognizing the value of experience and wisdom, paving the way for encore careers and late-life ventures.

The Role of Crystallized Intelligence

At the heart of extending the age plateau is crystallized intelligence, which refers to the knowledge, skills, and experiences accumulated over a lifetime. Unlike fluid intelligence, which involves solving new problems and tends to decline with age, crystallized intelligence often strengthens, making older adults a treasure trove of insight and expertise.

Crystallized intelligence enables individuals to:

Draw on a Wealth of Experience: Years of navigating life’s challenges build a deep reservoir of knowledge.

Apply Expertise Strategically: Older adults adapt their accumulated wisdom to evolving contexts, solving problems with creativity and precision.

Mentor and Lead: Sharing insights with younger generations fosters growth and ensures that valuable knowledge is passed on.

Studies show that a 60-year-old entrepreneur is three times more likely to succeed than a 30-year-old due to their ability to foresee challenges, navigate complexities, and apply practical wisdom.

The Two Halves of Life

Psychologist Carl Jung aptly divided life into two phases:

The First Half (Birth to 40): A time of learning, growth, and experimentation—the research phase.

The Second Half (40+): A period of application, where accumulated wisdom is fully utilized to make meaningful contributions.

My position is that life truly begins at 40 https://thesemajmindspa.com/2024/12/14/life-begins-at-40/ because it is at this stage that we enter a profound and intentional phase of self-discovery, integration, and purpose. Up until this point, much of our life can be viewed as a preparation—a series of experiences, lessons, and trials that lay the groundwork for the journey ahead. This research phase—spanning childhood, early adulthood, and the building of career and family—equips us with the knowledge, skills, and resilience to embrace the fullness of who we are. At 40, this preparation culminates in what Carl Jung described as the process of individuation, where we begin to focus inward, integrating our unconscious aspects with our conscious experiences to achieve a deeper sense of self. In my book, “THE BEST IS YET TO COME: A Psychologist’s Guide to Thriving in Retirement”, I introduce the concept of The Four Legs of Life. https://thebestisyettocome.online/

This framework challenges the outdated notion that aging is synonymous with decline. Instead, it positions the second half of life as a time for peak performance, creativity, productivity and fulfillment.

Exercise: The Foundation of Healthy Aging

Exercise is a powerful “drug” for extending both lifespan and healthspan. Muscle mass naturally declines with age—3-8% per decade after 30, accelerating after 60. This loss increases the risk of falls, the leading cause of accidental death among those 65 and older. Strength training, however, counteracts this decline, preserving muscle mass, reducing fall risk, and improving overall quality of life.

Regular physical activity also supports cognitive function, emotional well-being, and the ability to pursue new goals with vigor.

Saging Over Aging: A New Narrative

Saging redefines aging as a time of wisdom, influence, and growth, rather than decline. Figures like Angela Merkel, who led Germany into her 60s, and Clint Eastwood, still creating art at 94, show us that later life can be a period of innovation and influence.

By leveraging crystallized intelligence and embracing the expanded age plateau, individuals can lead lives that are not only longer but also more meaningful and impactful.

Time as a Precious Resource

Retirement often grants individuals an additional 8,760 hours per year. How we choose to spend this time determines the quality of our later years. Whether launching new ventures, mentoring others, or pursuing personal passions, the key is to remain active and purposeful.

The Best is Yet to Come

The second half of life holds immense potential for creativity, productivity, and fulfillment. By embracing exercise, leveraging experience, and redefining aging as a period of growth, we can ensure that the best truly is yet to come.

As a psychologist, author, and management consultant, I have dedicated my life to helping others unlock their potential. Aging is not a decline; it’s a transformation. Let’s change the way we view it—and embrace the possibilities that lie ahead.

Recently an editorial in the Sunday Gleaner raised the alarm regarding the clear and present danger poised by the demographic changes. https://jamaica-gleaner.com/article/commentary/20250105/editorial-population-dangers.

Jamaica is experiencing a significant decline in birth rates, exemplified by the decreasing number of deliveries at Kingston’s Victoria Jubilee Maternity Hospital. In 2022, the hospital recorded 6,700 births, which fell by 10% to 6,019 in 2023, with further declines anticipated for 2024. This trend mirrors the national decrease in fertility rates, with the total fertility rate dropping from 5.47 in 1970 to 1.9 in recent years, below the replacement level of 2.1. Contributing factors include improved education and workforce participation among women, better access to birth control, and successful family planning initiatives.

The declining birth rate poses challenges such as potential long-term population decline, an aging society, and a shrinking workforce, which could impact economic prosperity and the ability to support an older population. Currently, Jamaica’s age dependency ratio is 44 per 100 working-age individuals, but this is expected to worsen as the population ages without sufficient replacement by younger generations.

The article calls for a comprehensive discussion on Jamaica’s demographic trajectory, including potential government policies to encourage higher birth rates and support for families. It also emphasizes the need to capitalize on the current working-age population by enhancing education, skills training, and employment opportunities to drive economic growth and prepare for future demographic shifts. It is now imperative that we examine all that we can do to extend the creative and productive ‘age plateau’

There are actions that we need to take now. Doing nothing is not an option.

Initiate a National Dialogue on Demographic Trends:

• Stakeholder Engagement: Convene government agencies, private sector representatives, educational institutions, healthcare providers, and civil society organizations to discuss the implications of declining birth rates and an aging population.
• Public Awareness Campaigns: Educate the public on demographic challenges and the potential socioeconomic impacts to foster informed discussions and community involvement.

Develop Family Support and Incentive Programs:

• Financial Incentives: Explore policies such as tax breaks, childcare subsidies, and parental leave benefits to alleviate the economic burdens of raising children.
• Affordable Childcare Services: Invest in accessible and high-quality childcare facilities to support working parents, particularly mothers, in balancing career and family life.
• Housing Support: Implement housing policies that make it easier for families to access affordable and adequate living conditions.

Enhance Education and Workforce Development:

• Skills Training: Expand vocational and technical training programs to equip the workforce with skills aligned with current and future market demands.
• Lifelong Learning Opportunities: Promote continuous education initiatives to enable older adults to remain productive and adapt to changing job requirements.

Promote Healthy Aging and Longevity:

• Healthcare Services: Strengthen healthcare systems to address the specific needs of an aging population, including preventive care and management of chronic conditions.
• Active Aging Programs: Encourage physical activity, social engagement, and mental stimulation among older adults to maintain health and independence.
• Age-Friendly Environments: Develop public spaces and infrastructure that are accessible and safe for older individuals.

Implement Policies to Mitigate Population Decline:

• Immigration Strategies: Consider policies to attract immigrants who can contribute to the workforce and help balance demographic disparities.
• Retention of Young Professionals: Create opportunities and incentives to retain young talent within the country, reducing brain drain and supporting economic growth.

Establish a Monitoring and Evaluation Framework:

• Data Collection: Regularly gather and analyze demographic data to monitor trends and assess the effectiveness of implemented policies.
• Policy Adjustment: Be prepared to adapt strategies based on data insights and changing demographic patterns to ensure long-term sustainability.

Integrating Healthy Aging, Longevity, and Productivity:

Drawing on research in healthy aging and longevity, it is crucial to implement strategies that enable older adults to remain active contributors to society. This includes promoting regular physical activity, balanced nutrition, mental health support, and social engagement to enhance quality of life and reduce healthcare burdens.

Encouraging intergenerational collaboration can also be beneficial. Older individuals possess valuable experience and knowledge that can be shared with younger generations, fostering mentorship and community cohesion.

Additionally, adopting workplace policies that accommodate older workers, such as flexible hours and ergonomic adjustments, can help maintain productivity levels and economic stability as the population ages.

By addressing both the declining birth rates and promoting healthy aging, Jamaica can work towards a balanced demographic structure that supports sustainable development and economic prosperity.

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A Note to My Readers

I write not to convince or convert, but simply to share insights gained from years of observation, study, and experience. What I offer here are perspectives — reflections meant to inspire thought, not debates.

If my words resonate with you, I welcome that. If they do not, I invite you to simply take what serves you and leave the rest.

My consultation sessions are quite different. They are sacred spaces where I partner with individuals who are seeking clarity, transformation, and growth in their own lives. If that is what you desire, I would be honored to assist you.

Until then, may you continue your journey with curiosity and grace.