Stories of Flourishing · Profile No. 001

The Discipline of Choosing Less

On the founder of Amazônia Beachwear, and a way of doing business built on what she refuses to carry.

7 min readAugust 2026
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Mirthis de Siqueira, in a black halter top and floral trousers, against a soft pink architectural wall with palm foliage to the right.
Mirthis de Siqueira, founder of Amazônia Beachwear.

A business is usually introduced by what it sells. The stronger measure — and the harder one — is what it refuses to sell. Most companies grow by adding: more products, more categories, more channels. A few, quieter ones grow by subtracting, or by not growing at all in the ways that would require them to.

Amazônia Beachwear is one of the quieter ones. Founded by a Brazilian woman now living in California, it is a small, curated boutique that carries pieces from Brazilian resortwear designers, most of them still unfamiliar to American customers. The founder herself makes every selection. She has resisted becoming a marketplace, a mass retailer, or a trend-led store. She describes the practice as care. On closer reading it is also a discipline, and it may be an ethic.

It is worth taking seriously — not because the pieces themselves are unusual, which is not for this article to claim on her behalf, but because the way she has organised the business around the act of choosing is unusual. And the act of choosing, thoughtfully and repeatedly, is the closest thing most of us have to a private philosophy.

Choosing, again and again

The founder is candid about her method: “If I wouldn’t personally wear it or recommend it to a close friend, it doesn’t become part of Amazônia Beachwear.” The sentence is unremarkable in its grammar and remarkable in its implications. It sets a decision criterion that has almost nothing to do with commercial optimisation. It does not ask what would sell; it asks what she would stand behind. Whether the two answers coincide is left to the customer.

She reinforces the frame in a plainer sentence: “We’re not a marketplace with thousands of products. We’re a carefully curated boutique.” Read casually, this is positioning. Read carefully, it is a refusal — of the model of retail that has come to define the last two decades — expressed without heat. She does not attack the marketplace. She quietly declines to become one.

Almost every substantive answer she gives about the business circles back to the same act. Brands are carefully selected. Collections are personally curated. Pieces are chosen one by one because she believes each deserves its place. The vocabulary is repetitive because the practice is repetitive. She is describing a discipline.

The idea of a shorter shelf

The discipline extends past her own decisions. She hopes it will reach the customer’s wardrobe, too.

I believe women don’t need overflowing closets — they need pieces they genuinely love and reach for over and over again.

This is the closest her interview comes to an editorial position, and it is worth pausing on. The claim is not that overflowing closets are wasteful, which would be a critique. The claim is that they do not satisfy the desire they were meant to serve. What women actually want, in her account, is a small number of things they keep returning to. The pleasure is not in abundance; the pleasure is in the intimacy of use.

Her guiding phrase is simpler still: “Buy less, choose better.”

It is easy to reduce this to a slogan and easy to over-read it as a manifesto. It is neither. It is a practical instruction — what she is trying to do at her end of the transaction, and what she hopes the customer will do at hers. The transaction becomes a shared discipline of restraint, rather than a routine of acquisition.

Mirthis de Siqueira on a yacht railing, wearing a yellow Amazônia Beachwear one-piece swimsuit, water and coastline behind.
Mirthis de Siqueira.

Two places, one thread

She left Brazil for California, and the strongest sentence she gives in the interview is about what she was determined not to leave behind.

I never wanted to lose that authentic Brazilian DNA.

The intensity of the word never is disproportionate to anything else she says. It is the only place her language stiffens. She does not explain in detail what she means by it, and it is not the job of an editor to explain it for her. What the sentence indicates, at least, is that the business is partly a device for continuity. She has moved; something has to remain in motion between where she comes from and where she now lives. The boutique is one of the objects through which that motion is preserved.

Brazil is, in her telling, a place that celebrates colour, nature, movement and femininity. She keeps her characterisations at that register — sensory, unarguable, general. She has not offered a memoir of the country in this interview, and one would be false to invent for her. What is clear is that the sensibility she formed there is what she is trying to carry across, and that the American market she now sells into is the audience she is trying to carry it to, without dilution.

Mirthis de Siqueira, in a black tailored suit, standing beside the water.
Mirthis de Siqueira, founder of Amazônia Beachwear.

Consistency, over perfection

Asked about the difficulty of building a business in a country not her own, she answers with the sentence the interview keeps returning to in different phrasings: “Entrepreneurship is much more about consistency than perfection.”

She has taken a side. She develops the thought once, in a longer sentence that could have been the closing line of a management book but is not, quite: “There are always obstacles, but if you continue improving every day, those small improvements compound into something much bigger over time.”

It is the most familiar sentiment in the interview, and the one most easily dismissed. Both readings should be resisted. What she is describing is a temperament — a willingness to work in small units, over long time, without dramatic revision — that is out of fashion in an era of pivots and relaunches. She has chosen it deliberately. She recommends it to other founders not as motivation but as a description of what the work actually is.

The line rhymes, quietly, with her advice to the customer. Buy less, choose better. Improve every day. Both are recommendations for how to hold a life over long time — one addressed to the person doing the buying, one to the person doing the building.

The tension she leaves open

She does not tie every question closed. Asked about the future, she says she wants Amazônia Beachwear to become a destination in the United States for curated Brazilian resortwear. In the next sentence she adds that she wants it to continue growing without losing the personal connection that defines it now.

She has named a tension. She has not resolved it. It is honest of her to name it and not resolve it, because it is not resolvable in the abstract. A boutique whose founder selects every piece cannot become a national destination without something in the method giving way. She is aware of this. She proposes no formula for it. The interview holds the two intentions side by side.

An editorial piece is not obliged to close what its subject has left open. What it can do is note that the honesty of the naming is itself part of the practice being described. Choosing less has been her method until now; choosing what to preserve as the business grows will be a version of the same problem, at a different scale. The discipline will be the same. The circumstances will change.

A model on ocean rocks beside breaking waves, wearing a textured white Amazônia Beachwear bikini, coastal foliage in the foreground.
Amazônia Beachwear.

Reflection

There is a habit, in the way we now speak about our lives, of measuring them by what they have accumulated. Career, following, wardrobe, calendar. The measurement is not wrong, but it is partial. A life is also shaped by what it has declined — the invitations turned down, the possessions not bought, the collaborations refused, the tempo not adopted.

The founder of Amazônia Beachwear runs a business built almost entirely on decisions of that second kind. What she has chosen not to carry defines the boutique more precisely than what she has chosen to sell. What she has chosen not to become — a marketplace, a follower of trends, a machine of new arrivals — describes the business more truly than any adjective she could apply to it.

This is not advice. It is an observation about how coherence, in any life, is actually made. Not by finding the perfect direction and holding to it, but by returning, over and over, to a small set of decisions about what to keep out. Care, at close range, looks a great deal like refusal.

If any part of her method holds beyond the shelf she stocks, it is this: consistency is not a substitute for perfection. It is what perfection was always a poor name for. The daily practice of choosing what belongs, and — quietly, without commentary — releasing what does not, is not a merchandising method. It is one of the older ways a person has of caring for a life.

The Thriving Life 101 Editorial

August 2026

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