The Daishonin clearly believed that the darkest hour of night was but a prelude to a dawn of people’s awakening— an opportunity for change, a turning point. “Great evil portends the arrival of great good” (WND-1, 1122), he writes. He is saying in effect: “There’s no need for pessimism. I, Nichiren, possessing the sunlike wisdom of the Buddha, have appeared in response to this dark time. Great evil portends the arrival of the great good of kosen-rufu.
From The Wisdom for Creating Happiness and Peace, part 3, revised edition, p. 528

Daisaku Ikeda

In the course of life, you are bound to face all kinds of difficulties. At times, you may become stuck. That is when you need to strengthen your faith and chant daimoku in earnest. Difficult as it might be, once you surmount the steep mountain of your karma, a new horizon will open wide before you. Buddhist practice is the repetition of this process. Eventually, you will reach a state of absolute happiness that will never be destroyed.
>From The Wisdom for Creating Happiness and Peace, part 1, revised edition, p. 163

Daisaku Ikeda

Faith in Nichiren Buddhism is not blind belief or superstition. It means being able to accept the teaching based on reason and to experience and demonstrate its truth amid the realities of daily living. When we thoroughly study the Daishonin’s writings, deepen our faith and confidence through the experiences we gain through this Buddhist practice, and teach others about its validity, we can succeed in propagating the correct teaching in any environment.
From The Wisdom for Creating Happiness and Peace, part 3, revised edition, pp. 20-21

Daisaku Ikeda