Because of the principle that earthly desires lead to enlightenment, suffering becomes enlightenment and happiness. The greater our problem or sorrow, the greater the happiness we can change it into. This is the power of daimoku. That’s why those who chant Nam-myoho-renge-kyo do not fear anything. There is no need to.

From The Wisdom for Creating Happiness and Peace, part 2, revised edition, p. 49