One in, one out

Clutter is the number one enemy of space perception. A room filled with objects always appears smaller than it is. More importantly, the eye no longer knows where to settle, and the room becomes visually tiring.

Decluttering is not done once. It is maintained daily by a simple rule: one in, one out. Every new object bought or received must be offset by an existing object that leaves (donated, sold, thrown away).

Without this rule, accumulation is inevitable. We always bring in more objects than we spontaneously take out. After five years, the room that appeared spacious at the start has filled up without our noticing.

First step: the initial big sort.

Before applying the rule, do a comprehensive inventory, once and for all. Room by room, take everything out of cupboards and sort into three piles: keep, donate or sell, throw away. Reference method: Marie Kondo (KonMari), but other approaches exist.

The objective is not to empty everything, but to keep what is genuinely useful. An object not used in a year has no place in the home.

Second step: the daily rule.

From the big sort, apply "one in, one out".

You buy a new pair of shoes? One old pair leaves.

You receive a book as a gift? A book you have finished goes to a second-hand shop or a book exchange.

You adopt a new plant? One you no longer water goes to compost or to a neighbour.

You buy a vase you love? Another vase you no longer like leaves.

Categories to monitor particularly closely.

Books. The silent killer of shelves. Sort regularly (once a year) those you will never re-read.

Clothes. Simple rule: not worn in a year means it no longer suits you (size, style, context). Donate.

Decorative objects. Trinkets accumulated over travels, gifts, impulse purchases. Sort every 6 months.

Kitchen. Appliances used once a year (raclette set, bread maker). If you have not used it in 18 months, donate.

Marie Kondo popularised the KonMari method, based on sorting by category (not by room), and on the question "Does this object spark joy?" It remains one of the most effective methods.

Joshua Becker (author of "The Minimalist Home") takes a more pragmatic approach based on function. If an object does not have a clear and regular function, it goes.

Pierre Yovanovitch and Joseph Dirand always work through subtraction. Their interiors appear large not because they are vast, but because they are pared back to the essential. The implicit rule: "what can I remove?" rather than "what can I add?".