Complex sentence: People desire to think of themselves as beings of value and worth with a feeling of permanence, a concept in psychology known as self-esteem, that somewhat resolves the realization that people may be no more important than any other living thing.
Split into simpler sentences: People desire to think of themselves as beings of value and worth with a feeling of permanence, a concept in psychology known as self-esteem. This feeling counters the cognitive dissonance created by an individual's realization that they may be no more important than any other living thing.