What will your 100-year life look like? Does the thought of working for 60 or 70 years fill you with dread? Or can you see the potential for a more stimulating future as a result of having so much extra time? Many of us have been raised on the traditional notion of a three-stage approach to our working lives: education, followed by work and then retirement. But this well-established pathway is already beginning to collapse - life expectancy is rising, final-salary pensions are vanishing, and increasing numbers of people are juggling multiple careers. Whether you are 18, 45 or 60, you...