Japan has some of the longest-living citizens in the world -<a href="http://www.sankei.com/life/news/170301/lif1703010080-n1.html">87 years for women and 81 for men </a>, according to the country's Ministry of Health, Labor and Welfare. Could this concept of ikigai contribute to longevity? Author Dan Buettner believes it does. He's the author of Blue Zones: Lessons on Living Longer from the People Who've Lived the Longest, and has travelled the globe exploring long-lived communities around the world, which he calls " <a href="https://bluezones.com/books">blue zones </a>". One such zone is Okinawa, a remote island with a remarkably high number of centenarians. While <a href="http://news.bbc.co.uk/2/hi/uk_news/magazine/7250675.stm">a unique diet </a>likely has a lot to do with residents' longevity, Buettner says ikigai also plays a part.

Hasegawa points out that in English, the word life means both lifetime and everyday life. So, ikigai translated as life's purpose sounds very grand. "But in Japan we have jinsei, which means lifetime and seikatsu, which means everyday life," he says. The concept of ikigai aligns more to seikatsu and, through his research, Hasegawa discovered that Japanese people believe that the sum of small joys in everyday life results in more fulfilling life as a whole.

For Japanese workers in big cities, a typical work day begins with a state called sushi-zum e, a term which likens commuters squeezed into a crowded train car to tightly packed grains of rice in sushi. The stress doesn't stop there.

Ikigai: A Japanese concept to improve work and life

Amani Jocelyne