Even if the person always thinks they're right, they still deserve to be heard, just like you deserve to be heard. Listen to their point of view first, taking the time to really hear what they're saying. To show you're listening, you can nod along to the conversation, and provide short summaries, such as "So what I hear you saying is... " The person may not be particularly forthcoming about what's going underneath the surface. Plus, asking questions can help you understand exactly what they're talking about when it comes to the subject and how they feel on the topic. Even simple questions, such as "Why?" or "How come you think that?," can help you figure out what's under the surface. One way to argue with someone who thinks they know everything is to first side with them, or at least admit you understand their side. After you agree, you can present a counterargument.  For instance, you might say, "I understand what you're saying. It's an interesting point, but here's what I think..." You could also say something like, "Thanks for helping me understand your side. I can see where you're coming from. My point of view is a bit different..." If you say your points in a threatening way, the other person will likely shut down. However, if you present your side by couching it in less threatening language, the other person is more likely to listen.  For example, instead of saying, "I am definitely right," you could say, "Well, what I've read is this... " Instead of saying, "Here's the right point of view...," you might say, "Maybe there's another side to the story..." Sometimes, when you confront a person with direct advice in an argument, they just shut down and don't listen, just like when you make an argument in a threatening way. In this case, you may be offering advice or a solution, only the person can't hear what you're saying.  You may find that asking a person leading questions is a better way to get them thinking in a different direction than a direct confrontation. For instance, you might say, "Oh, what...

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Write a summary of the previous text in Vietnamese:
Lắng nghe người kia nói. Đặt các câu hỏi để hiểu tốt hơn. Tán thành trước, sau đó đưa ra lý lẽ phản biện. Tranh luận một cách mềm mỏng. Đưa cuộc tranh luận ra khỏi tình thế đối đầu.