What did the author learn from Flowers on the Ruins?

In the journey of life, when encountering setbacks and failures, don't lose heart and don't give up easily. As long as you have a firm belief in your heart and try to find it, you will always find the "sunshine light" to help you tide over the difficulties.

It may be a little long, but I wrote it correctly, so I can still cope. This is the first time to answer a question, and it may be a bit poor.