If happiness is viewed as a journey, then simplicity serves as its point of departure. This is the foundational message with which Vibhor Kumar Singh opens The Billionaire and the Monk. Yet, minimalism is neither a lack of ambition nor an unattainable state of holiness; rather, it is a conscious lifestyle choice—one that prioritizes the essential and channels resources toward core values.
Sustainability is simplicity
As the clutter of material excess is stripped away, one’s living space and underlying value system begin to emerge with greater clarity. In this sense, simplicity does not stifle ambition; rather, it reorients it—shifting the focus from quantity to quality, and from the pursuit of ‘more’ to the pursuit of ‘enough.’
By shedding the layers of accumulated consumption, both our physical environments and our value systems attain a newfound clarity. In this light, simplicity transcends personal preference; it emerges as a vital response to the increasingly visible constraints of our environment and ecosystems. Consequently, the concept of ‘sufficiency’ evolves from an individual moral virtue into a foundational principle for restructuring socio-economic life.
As the year draws to a close in major urban centers, the traditional sound of sweeping courtyards is gradually replaced by the relentless blare of traffic, the frantic pace of deliveries, and shopping malls that stay illuminated late into the night. Many conclude the year with checklists that outweigh even their holiday shopping. Amidst this frenetic rhythm, moments of stillness have become a rare luxury; meanwhile, the Lunar New Year—once an inherent time for pause and reflection—no longer feels as naturally present as it once did.
Nevertheless, Tet retains a unique power: it compels us to confront our own existence and the invisible boundaries of time, energy, and resources. Amidst the rush of preparations, many find themselves reflecting: “Perhaps this year, I will do less; enough is sufficient.” This simple realization strikes at the heart of ecological economics, where the desire for infinite growth inevitably clashes with the finite limits of the biosphere. In an economy engineered for perpetual expansion and consumption, the concept of “enough” is often marginalized. It is within this context that the notion of sufficiency—consuming only what is necessary to balance human needs with nature’s carrying capacity—re-emerges as a foundational principle.
From this, a simple truth emerges: while any economic model is subject to adjustment, the biosphere is non-negotiable. A sustainable economy is an impossibility without a resilient biosphere to support it.
Consumption spiral and human impact
Ecological economics quantifies human impact on the planet through the formula: I = P x A x T. In this equation, ‘I’ represents total environmental impact, ‘P’ stands for population, ‘A’ for affluence (level of consumption), and ‘T’ for technology. Among these variables, consumption plays the most critical role. The surge in global impact is driven less by population growth and more by the intensification of individual consumption—owning more goods, utilizing more energy, and generating higher levels of emissions.
This phenomenon is vividly reflected in urban lifestyles. As incomes rise, the impulse to ‘upgrade’ one’s standard of living follows suit. Modest apartments gradually become cluttered with smart devices, living rooms are refurnished to keep pace with fleeting trends, and wardrobes are replenished annually. Consumption has effectively evolved into a modern addiction. While the standard of living may improve, our dependence on consumption deepens, leaving individuals as mere cogs in an economic machine driven by perpetual consumer growth.
This phenomenon is widely recognized as the ‘consumption spiral’: individuals purchase and upgrade in pursuit of a fleeting sense of satisfaction, only for that feeling to evaporate almost instantly. Each new acquisition triggers a momentary euphoria, which immediately sets a new baseline—compelling us to chase the larger, the newer, and the more expensive. In this cycle, the sense of ‘enough’ remains elusive, as our desires are conditioned by social comparison and the relentless pressure of peer expectations.
Marketing tactics and the rise of e-commerce have accelerated this consumption spiral. Through personalized advertising and the constant influx of new products, the act of purchasing has become frictionless, facilitated by door-to-door delivery services. Consequently, material possession has evolved into a primary tool for status signaling. As the pressures of modern life intensify, consumption is often employed as a compensatory mechanism—an attempt to fill a sense of void, even when that deficiency is merely a transient psychological state.
Should the growth-centric consumption model persist, even the most advanced technological innovations will fail to offset the depletion of natural resources. While technology (T) can reduce emissions per unit or enhance resource efficiency, these gains are often eclipsed by the ‘rebound effect,’ where total consumption (A) rises so rapidly that it nullifies any environmental benefits. This explains why, despite the expansion of renewable energy and recycling initiatives, global emissions and resource extraction continue to climb. Three decades after the first COP summit, global CO2 levels are approximately 65% higher than they were in 1990. This reality underscores a stark conclusion: one cannot advocate for sustainable development while simultaneously maintaining a culture of insatiable consumption.
True sustainable development is defined as progress that achieves social well-being and an enhanced quality of life without increasing the throughput of natural resources. Consequently, the concept of ‘sufficiency’ must occupy the center of our discourse. Transcending the consumption spiral and reclaiming the capacity to recognize what is ‘enough’ is the essential prerequisite for balancing human needs with environmental boundaries.
Fundamentally, GDP serves as a metric for production and consumption; it is inextricably linked to the depletion of resources at the point of entry and the escalation of waste and pollution at the point of exit. Therefore, quality of life cannot be measured by consumption levels alone. Instead, it must be evaluated through indicators that reflect holistic happiness and prosperity—such as the Well-being Index—alongside environmental integrity, physical and mental health, and the cultivation of sustainable social capital.
From empty world to full world
Ecological economics distinguishes between an ‘Empty World’ and a ‘Full World’—the latter appearing affluent, yet so saturated that no ecological space remains for further material growth. The ‘Empty World’ era was characterized by abundant resources and a small human population; economic activities occupied only a fraction of the ecosystem, and growth faced virtually no environmental hurdles. In contrast, the ‘Full World’ describes our current reality—a world so crowded that every economic action hits a natural limit. Resources are extracted at their thresholds, greenhouse gases accumulate beyond nature’s absorptive capacity, and biodiversity continues to dwindle. In this state, every decision to produce or consume incurs a significant environmental cost.
From a systemic perspective, every consumer decision carries an ecological cost. When viewing Vietnam through the lens of a ‘Full World,’ several paradoxes emerge: urban centers expand faster than green spaces can flourish; consumption outpaces the capacity for waste recycling and management; and modern conveniences offer immediate comfort while imposing a long-term environmental burden. In this context, the concept of ‘enough’ transcends spiritual value—it becomes an ecological imperative for the preservation of life. Though many traditional customs may be fading within the modern metropolis, the Lunar New Year remains a vital reminder: a time to re-evaluate what is truly sufficient, both in our personal lives and for the environment.
Tet: “Just enough to use”
Tet in the modern metropolis has diverged from the traditions of the past. Confined spaces, restricted time, congested traffic, and the pressures of professional life mean that holiday preparations can no longer be as expansive as they once were. Yet, within these very constraints, the philosophy of ‘sufficiency’ has emerged with newfound clarity. Many young families no longer engage in the labor-intensive process of wrapping Banh Chung (a traditional Vietnamese sticky rice cake associated with Tet), opting instead to purchase exactly what they need. This is not a sign of lethargy or a rejection of heritage; rather, it represents an acute awareness of the limits of time, space, and energy. It is, in essence, a form of sustainable adaptation.
Tet shopping has similarly been scaled back—partly due to economic pressures, but more significantly because of a growing realization that many purchases become a burdensome storage liability once the festivities conclude. Selective consumption, therefore, reflects a society attaining a higher degree of environmental maturity; it is a shift where restrained consumption aligns with material circularity, and where spending is redirected toward experiences rather than the accumulation of physical goods.
Meals during Tet holiday have, in some instances, been distilled down to a few core dishes; the emphasis has shifted toward the act of gathering rather than the extravagance of the banquet. Here, ‘sufficiency’ is measured by the presence of loved ones, not the abundance of the menu. Furthermore, the practice of sharing seasonal decorations, plants, or festive items reflects an organic spirit of circularity—demonstrating that sustainable living can be realized through simple communal actions without the need for complex terminology.
While the urban Lunar New Year may no longer embody the full splendor of tradition, the rustic yet profound blessing, ‘may you have just enough,’ persists. It signals that Vietnamese society is gradually rediscovering its equilibrium and reconnecting with the concept of ‘sufficiency’—even if the profound systemic implications of this shift are not yet fully realized.
Living with enough
Through the lens of sustainable development, ‘sufficiency’ is more than a moral standard; it is the fundamental condition for systemic stability. Any breach of limits leads inevitably to imbalance, whereas only sufficiency can maintain harmony. This spirit has long been embedded in
Vietnamese culture: a philosophy of being frugal without being miserly, and of managing resources not for infinite accumulation, but for resilience against uncertainty. In this tradition, sharing occurs not out of excess, but out of the understanding that community serves as the ultimate shield against the storms of life. Thus, the proverb ‘the intact leaf protects the tattered one’ has become a defining cultural identity.
Building upon this axiom, the sharing economy and collaborative communities are not merely transient trends, but the inevitable consequence of a sustainable development mindset. In this framework, the objective shifts away from the maximization of production and consumption toward optimization within finite ecological limits. It directs us toward a level of ‘sufficient consumption’—one intrinsically linked to reuse, recycling, and regeneration.
Within the reality of a ‘Full World,’ all systems are compelled to transition toward restraint, efficiency, and regeneration; ‘sufficiency’ thus becomes the primary mechanism through which individuals participate in this transformation. This shift is manifested in tangible choices: refusing the unnecessary, prioritizing reuse and repair, and redirecting expenditure from material goods toward experiential values—such as education, responsible tourism, and community engagement. Furthermore, it involves favoring local, durable products that offer transparency regarding their environmental footprint.
Choosing enough to live longer
In a world that expands relentlessly every day, choosing ‘enough’ is not an act of retreat; it is a more intelligent step in our evolution. It marks the moment we acknowledge the limits of our planet and ourselves, realizing that true happiness is found not in the accumulation of excess, but in the preservation of what is truly meaningful.
Ultimately, a sustainable economy is an impossibility in the absence of a resilient biosphere to sustain it. As the spirit of Tet gently enters every home—from the modest dwellings in narrow alleys to the high-rise condos above—what we seek remains unchanged: a new year of tranquility, equilibrium, and genuine fulfillment.
(*) Sustainability advisor, ESG-S; PhD in sustainable management and environment
