Faith in Nichiren Buddhism enables one to bring forth the great life force needed to lead such an existence.

Buddhism Day by Day

Wisdom for Modern Life by Daisaku Ikeda
Monday, January 28, 2013:

 

Why are human beings born? This question has posed a great challenge. Josei Toda lucidly set forward his conclusion. Namely, that this world is a place for people to, as the Lotus Sutra states, "enjoy themselves at ease." We were born here in order to thoroughly savor the joys of life. Faith in Nichiren Buddhism enables one to bring forth the great life force needed to lead such an existence.