'Cicero remarked that old age is a strange business. No one wants to miss it, he said, and everyone complains about it when they get there. Not I, though'. Old age comes to us all, and ''Enfield'' wittily advises on how to survive its trickier obstacles, not least the people who suggest you must 'do something'. One of the great delights of the golden years is doing less - from giving up DIY and ambition to not inviting people to dinner. In these elegantly entertaining essays, ''Enfield'' guides those entering their finer years on how to make the most of old age.