Former Cabinet Secretary Gus O’Donnell, who now heads a government initiative on well-being, tells Peter Stanford how religious faith is a valuable guide to fulfilment In the modern, open-plan office where Gus O’Donnell works, there is a kitchen area with a coffee machine for staff, a fridge with drinks and snacks, brightly coloured chairs and even table football. “Does anyone get any work done?” I asked, more severely than I intended when the former Cabinet Secretary (now Lord O’Donnell of Clapham) pointed out the table football. “They work and they talk,” he replied with a gentle note of reproach in his voice. “It’s a good example of well-being in practice.”I have come to the central London offices of Frontier Economics, of wh