Definitions of successful aging that are based solely or primarily on your target having attributes normally associated with individuals younger than your own age. It’s great if the individual you are targeting is able to and enjoy running marathons. But beware of equating physical strength, exceptional health or mental acuity with successful aging. While it is true that some people are genuinely excited about doing whatever it takes to maintain or advance levels of attainment they have enjoyed in the past, many others are driven to self-destructive extremes by their fear of aging rather than by innate desires and evolving passions.