Answer :
The correct answer to this open question is the following.
You did not include the name of the book, story, the name of the writer, or any text as a reference. Without that information, we can only comment on the following general terms.
If the theme of your text is the truth about life, what you should do is to find the two or three elements of the text that support that affirmation and see how the author supports the statements. This means that you have to look for the arguments established so you can use and correctly apply the REST strategy.
For instance, if the theme you draw from these literary elements is that life has its ups and downs, you need to support your answer by providing the arguments of examples of the text that you did not include here.
The REST strategy stands for:
Restate the affirmation or the question you are about to comment.
Explain the argument of your answer.
Support with proper details, examples, and references.
Tada. Provide a good conclusion that astonishes your readers.