The eight-year-old backseat driver who couldn't stop worrying about speed limits

James was eight years old, entering third grade, when his parents brought him to see Kim John Payne. He complained of stomachaches that had nothing to do with food, and he could barely fall asleep at night. In the car, he became the family's self-appointed policeman, scanning the road for anything above the speed limit and cataloguing every hazard he could spot.

His parents were proud of him in a particular way. Both were avid followers of the news, the television tuned to current affairs whether anyone was watching or not, and James had been absorbing their conversations about politics and the environment since he was small. By eight, his grasp of global warming rivalled a public figure's. They called him their little citizen of the world.

Payne saw something else: a boy so saturated with adult concern that his nervous system had nowhere to rest.

Working with the family, Payne didn't target James directly. He worked on the environment around him, cutting the number of televisions in the house from two to zero, reducing three computers to one, and asking the parents to save their political discussion for after James was in bed. It took real discipline, they told Payne, to catch themselves mid-sentence.

Within two weeks his sleep improved and his anxiety eased. Within a month he was building things, catching lizards, and making a friend who would still be his closest one two decades later.

Payne came to describe what James had been suffering as cumulative stress reaction, or CSR: not one traumatic event, but the steady accumulation of too much stuff, too many choices, too much information, and too much speed, at a pace no eight-year-old's nervous system was built to absorb. It looks nothing like the dramatic trauma most of us associate with post-traumatic stress, yet Payne found the same hypervigilance, the same difficulty settling, in children whose lives were, on paper, comfortable and safe.

The four pillars don't announce themselves as a crisis. They arrive as normal life. That is exactly what makes them so easy to miss, and so effective, once named, to take apart one piece at a time.

Start by watching for a pattern rather than a single bad day: does the nervousness, the pickiness, the trouble settling keep showing up, week after week? Then spend one weekend taking honest stock of your own four pillars, counting the screens, the toys, the scheduled hours, and the unfiltered news or adult worry that reaches your child's ears. Instead of tackling only one of these at a time, trim a little from all four together, exactly as James's parents did when they pulled out the televisions and moved their political conversations to after bedtime. Give the change three or four weeks before you decide whether it worked, because a stress that built up slowly will only ease the same way.