Excerpt from The Unwinding of the Miracle by Julie Yip-Williams, plus links to reviews, author biography & more

My sweet babies, I do not have the answer to the question of why, at least not now and not in this life. But I do know that there is incredible value in pain and suffering. If you allow yourself to experience it, to cry, to feel sorrow and grief, to hurt. Walk through the fire and you will emerge on the other end, whole and stronger. I promise. You will ultimately find truth and beauty and wisdom and peace. You will understand that nothing lasts forever, not pain, or joy. You will understand that joy cannot exist without sadness. Relief cannot exist without pain. Compassion cannot exist without cruelty. Courage cannot exist without fear. Hope cannot exist without despair. Wisdom cannot exist without suffering. Gratitude cannot exist without deprivation. Paradoxes abound in this life. Living is an exercise in navigating within them.

I was deprived of sight. And yet, that single unfortunate physical condition changed me for the better. Instead of leaving me wallowing in self-pity, it made me more ambitious. It made me more resourceful. It made me smarter. It taught me to ask for help, to not be ashamed of my physical shortcoming. It forced me to be honest with myself and my limitations, and eventually, to be honest with others. It taught me strength and resilience.

You will be deprived of a mother. As your mother, I wish I could protect you from the pain. But also as your mother, I want you to feel the pain, to live it, embrace it, and then learn from it. Be stronger people because of it, for you will know that you carry my strength within you. Be more compassionate people because of it; empathize with those who suffer in their own ways. Rejoice in life and all its beauty because of it; live with special zest and zeal for me. Be grateful in a way that only someone who lost her mother so early can, in your understanding of the precariousness and preciousness of life. This is my challenge to you, my sweet girls, to take an ugly tragedy and transform it into a source of beauty, love, strength, courage, and wisdom.

Many may disagree, but I have always believed, always, even when I was a precocious little girl crying alone in my bed, that our purpose in this life is to experience everything we possibly can, to understand as much of the human condition as we can squeeze into one lifetime, however long or short that may be. We are here to feel the complex range of emotions that come with being human. And from those experiences, our souls expand and grow and learn and change, and we understand a little more about what it really means to be human. I call it the evolution of the soul. Know that your mother lived an incredible life that was filled with more than her "fair" share of pain and suffering, first with her blindness and then with cancer. And I allowed that pain and suffering to define me, to change me, but for the better.

In the years since my diagnosis, I have known love and compassion that I never knew possible; I have witnessed and experienced for myself the deepest levels of human caring, which humbled me to my core and compelled me to be a better person. I have known a mortal fear that was crushing, and yet I overcame that fear and found courage. The lessons that blindness and then cancer have taught me are too many for me to recount here, but I hope, when you read what follows, you will understand how it is possible to be changed in a positive way by tragedy and you will learn the true value of suffering. The worth of a person's life lies not in the number of years lived; rather it rests on how well that person has absorbed the lessons of that life, how well that person has come to understand and distill the multiple, messy aspects of the human experience. While I would have chosen to stay with you for much longer, had the choice been mine, if you could learn from my death, if you accepted my challenge to be better people because of my death, then that would bring my spirit inordinate joy and peace.

Excerpted from The Unwinding of the Miracle by Julie Yip-Williams. Copyright © 2019 by Julie Yip-Williams. All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.