This must be the reason we are not happy. And so we work harder and harder to find this utopia, without realising that we are getting further and further away from what Maynard Keynes actually meant. We are on an everlasting quest to find ‘the ideal work week’, in the hope that the winning formula will bring endless happiness, fulfilment and satisfaction. Is the answer eight hours of work a week (apparently the optimum for our mental health)? Four hours (posited by bestselling educator Tim Ferriss – even more improbable)?