Life is an adventure, or should be. I think living well and doing it into a ripe old age is a mindset. When you stop learning, when you stop taking joy in all the marvels that surround you every day, when you stop finding a reason to jump out of bed in the morning - that's when you start to die. Even if you don't physically get to the point of being six feet under for a few years. I firmly believe old age is a state of mind. While I don't make plans or even set goals (although I really would like to take a trip to Mars for my 90th birthday) I still have many reasons to jump out bed every morning and look forward to that day's adventures.