The good news is that, unlike fate, our karma can be changed by causes we make from this moment forward.

Buddhism, which is founded on the law of cause and effect, stresses the concept of karma. This principle explains that life at each moment is subject to the cumulative effects of causes made in the past. What we do, what we say and what we think are all causes. And according to Buddhism, the moment we do something, say something or think something, an effect is registered in the depths of our being. Then, as our lives meet the right circumstances, the effect becomes apparent. Personality traits are strongly connected to our karma. The good news is that, unlike fate, our karma can be changed by causes we make from this moment forward. In fact, the practice of Buddhism is essentially the practice of continually changing our karma.

Wisdom for Modern Life by Daisaku Ikeda 7/7

Change fixed karma by practicing the Lotus

In this age, it is as natural for a woman to change her fixed karma by practicing the Lotus Sutra as it is for rice to ripen in fall or chrysanthemums to bloom in winter. When I prayed for my mother, not only was her illness cured, but her life was prolonged by four years. Now you too have fallen ill, and as a woman, it is all the more timely for you to establish steadfast faith in the Lotus Sutra and see what it will do for you. 19/11

The Writings of Nichiren Daishonin
On Prolonging One's Life Span
Written to the lay nun Myojo in 1279

One's karma

It is impossible to fathom one's karma. Iron, when heated in the flames and pounded, becomes a fine sword. Worthies and sages are tested by abuse. My present exile is not because of any secular crime. It is solely so that I may expiate in this lifetime my past grave offenses and be freed in the next from the three evil paths. 20/3

The Writings of Nichiren Daishonin
Letter from Sado
Written to Toki Jonin on March 20, 1272

Good Karma

What good karma must you have formed in the past, then, to have been born a person able to recite even so much as a verse or a phrase of the Lotus Sutra! 9/2

The Writings of Nichiren Daishonin
The Recitation of the "Expedient Means" and "Life Span" Chapters
Written to Hiki Daigaku Saburo Yoshimoto's wife on April 17, 1264