There's a good chance you could live to be 100 years old! Are you ready for the marathon journey? Do you have a plan to maintain your quality-of-life across your full longevity - what we call "Qualongevity?" You can do nothing and take your chances. Or, you can be proactive and take control of your future by using science-based interventions to lower your risks and optimize your protections. Start now! No matter your age, the sooner you start training for the longevity marathon, the better off you will be. Give yourself the best shot of maintaining health, happiness, meaning and purpose NOW and throughout the long and prosperous life you design.