Four Thousand WeeksThe paperback edition of the liberating Sunday Times bestseller is set to enhance readers' lives even further with extra content on how we can all spend our four thousand weeks. The average human lifespan is absurdly, outrageously, insultingly briefif you live to 80, you have about four thousand weeks on earth. How should we use them best? Of course, nobody needs telling that there isn't enough time. We're obsessed by our lengthening to do lists, our