Reminds me of a quote from Rhythm of War by Brandon Sanderson.
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It will,” Wit said, “but then it will get better. Then it will get worse again. Then better. This is life, and I will not lie by saying every day will be sunshine. But there will be sunshine again, and that is a very different thing to say. That is truth. I promise you, Kaladin: You will be warm again.
Alternative Lord of the Rings: The Two Towers quote.
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FRODO: I can’t do this, Sam.
SAM: I know. It’s all wrong. By rights we shouldn’t even be here. But we are. It’s like in the great stories, Mr. Frodo. The ones that really mattered. Full of darkness and danger they were. And sometimes you didn’t want to know the end. Because how could the end be happy. How could the world go back to the way it was when so much bad had happened. But in the end, it’s only a passing thing, this shadow. Even darkness must pass. A new day will come. And when the sun shines it will shine out the clearer. Those were the stories that stayed with you. That meant something. Even if you were too small to understand why. But I think, Mr. Frodo, I do understand. I know now. Folk in those stories had lots of chances of turning back only they didn’t. Because they were holding on to something.\
FRODO: What are we holding on to, Sam?\
SAM: That there’s some good in this world, Mr. Frodo. And it’s worth fighting for.