> Time is the only currency you have which can't be earned and only spent.

I would argue that you can earn lifetime with a healthy life style. I remember to have read a study that measured the average difference between healthy and unhealthy life styles with 14 years.

If you spend 1 day a week more for a healthy lifestyle (exercise, self cooking, enough sleep, little stress, enough recreation time) for 40 years you have earned ~9 years life time.

And I would argue that those 40 years are more enjoyable.