A garden gate left open can undo care performed far from it.

Long effort can be cancelled by a single unattended detail, and the detail is usually somewhere nobody thought of as the work. Months of tending happen inside the fence; the fence only matters at the one point where it opens. Closing a gate never feels proportionate to what it protects. Most failures are like this: not a collapse of the main thing, but a boundary left casual.

Find the gate in something you have invested in. The backup nobody checks, the lock that sticks, the handover step everyone assumes. Give it five minutes of attention, which is roughly what it needs and almost never gets.