I suppose this thing is based on some statistic or other. What is interesting is that if I began practicing yoga and meditation again (as I did for several years during my 20's & 30's), it would add 3 years to my life. If I changed my outlook and began considering myself a "lucky" person, it would add an additional 3 years. The yoga would be easy. Changing my attitude to consider myself "lucky" would be a major undertaking. Most of the time I think someone placed a curse on me at birth.