Keep Only What Fits on the Shelf

T.K. Coleman, who advises people on living with less, starts with a simple premise: wanting something is not good or bad. The useful question is what boundary will keep it from becoming excess.

His test case is the just-in-case book, the one picked up on sale or for free with the thought that it might be read later. That thought is not wrong, he says, but it turns costly without a limit on how long the game goes on and how much can pile up.

His fix is a capped container. Choose a box for just-in-case books and set a number, such as no more than 10. Once the box is full, every new arrival means something has to leave.

Coleman uses a strict exchange rate. When the box reaches 10, he says, one book coming in means two books must go out. The rule forces a deliberate choice instead of slow accumulation.

He adds a second limit, a deadline. A book can stay in the box for six or 12 months, and if it sits longer than that, it goes out whether or not anything replaces it.

Joshua Fields Millburn, an author who writes about owning less, described the same idea with a small office bookshelf. When he spoke, it held 93 books, he said, not because 93 was a goal but because that is how many fit.

At the time, his neighborhood had four free book boxes, and he was often tempted by what he found there. If he wanted to bring one home, he had to remove at least one from the shelf, sometimes more if the new book was thick, and donate what left.

He framed it as a trade. As Millburn puts it, is he "willing to give up one of" his Anthony de Mello books to make room for a David Foster Wallace book? He could fit more books in his home, he said, but the cost of more is often much greater than the price tag.

To start, pick one category, find a box or shelf that feels right, and write the number and the date rule on it. Excess then has nowhere to hide.