at peace

Chinese
#1
Hello everyone:

What does "at peace" mean in following sentences? Calm or wit?

As you frame your story and develop your character, ask yourself, “What is my caterpillar doing?” Your character will either be transformed into someone more mature, insightful or at peace, or will plunge into death or despair.


The source is from WritersDigest and the page is THE 5 ESSENTIAL STORY INGREDIENTS .
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Thanks in advance
 
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