It's about cultivating a self that is the most optimal efficient version of yourself. So what does that mean? Well let me ask you this. Do you make de-stressing a part of your daily fitness routine?
If not make it mandatory. What is de-stressing? 8 hours of good quality sleep, and 1 activity a day that makes you laugh and/or smile.
Then come see me when you are over a 100 years old because that is probably the best thing you can do for longevity.