Passage Summary: We don't have to fight with each other as much as we think; we only do it because we are irrational and tend to believe the worst about people even when they've been mostly good.

Conclusion: The common belief that personal conflicts are an unavoidable part of life is incorrect.

Reasoning: Conflicts are primarily caused by irrationality, such as the human tendency to prioritize negative information about others over positive evidence.

Analysis: In this 'Identify the Conclusion' task, the author's main point is found in the first sentence, specifically the clause 'but that assumption is just not so.' The counselor is refuting a common premise about human nature. The subsequent sentences provide the 'why' (irrationality) and a specific example (the asymmetry of trust) to support that refutation. When a speaker says 'Many people assume X, but...', the 'not X' part is almost always the conclusion.