It's 9pm. As I pull the sheets back and climb into bed my mind is still, happy. I didn't do much today. Just a few months ago I would have felt guilty. A chronic maximiser, I measured success by the number of activities I'd managed to complete that day. I'd pile into bed exhausted but satisfied that I'd used up the capacity of my waking hours.

I'd pride myself on staying on top of emails, Facebook and the news. I have two children, aged nine months and three, and a new business, Zambesi, aged one. I travel a lot and sometimes experience the sensation of "skimming" the world.It feels, or felt, productive.