Our perception of time is indeed our reality.

Busyness has become such a social value that we will even create it, we will create that sense of breathlessness because we think that's how we show status and importance. That is a really interesting and troubling finding. We've taken this notion of hard work to a crazy degree.

Even when men do more housework and child care, a lot of times it's still women in charge, delegating, so you have all that noise in your brain. You're on a bike ride or picnic with your family, and it looks like leisure, but on the inside you are keeping track of everybody's emotional temperature, and did I pack this, what are the directions, how much time are we going to be here, do we have anything for dinner? It's like a toilet running all the time.

Because this is how it feels to live my life: scattered, fragmented, and exhausting.

Busyness is now the social norm that people feel they must conform to, Burnett says, or risk being outcasts.

If you had the perception that you are very stressed out then your grey matter was fully 20 per cent smaller in volume than people who did not have that same feeling. This is the grey matter in your prefrontal cortex: It controls thinking, learning, planning, decision-making. That matters because when we are feeling more stressed, that is when we are at our most vulnerable in our inability to think our way out of it.

What's happening now with technology is we live with very porous boundaries. All those little interruptions fragment our time and attention and make us feel like work never ends. It makes us feel like we don't ever have that sacred time for family or to breathe or meditate or for leisure. Time is contaminated for everyone. I'm hoping that as we get used to these technologies we'll get smarter about how we use them and also how to shut them off.