In disputes there are always losers and those who have proved their rightness. For the most part, I want to be second, not first.
But it is not always easy to conduct discussions so that they do not go to swearing, but bring your thoughts to the person correctly.
Set yourself a clear goal. Do not think abstractly, but decide what you want to achieve by this conversation. In advance, formulate what you are going to say. Phrases should be short and clear, so that the interlocutor does not lose the thread of your reasoning in the middle of a flowery example.
Do not forget who you are talking to. All people are different. Some will not react to emotional methods of persuasion, while others will not react to rational methods. For example, some follow logic. When talking to such people, you must resort to facts and reliable information, as well as maintain a formal style of communication. Emotional people are attached to feelings, but remember, the less you are acquainted with a person, the less he is influenced by arguments based on your feelings.
Keep track of the facts that you provide. Put yourself in the place of your opponent and determine what arguments will "beat" him in the discussion. Try to present them in the following order: first - strong, then - medium, then - the strongest counterargument. Weak facts should not be tolerated at all. There is an opinion that what is said in the beginning and in the end cuts well into memory.
Respect your opponent. If you show respect for his opinions and beliefs, the interlocutor will not need to defend himself from you. This will facilitate the process of persuasion.
Do not belittle yourself. Do not apologize for your opinion. As little as possible, ask for forgiveness, otherwise you will seem insecure.
Start with what unites you. If it's difficult to come to an agreement, start with what is common between you and your interlocutor, and not with the cause of the disagreements.
Listen and understand what they say to you. Misunderstanding only prevents you from convincing your opponent. Listen to it, do not interrupt and ask clarifying questions.
Convince the interlocutor that the idea came from him. People believe more to themselves than to others. Use phrases like: "Remember, you yourself said ..." "Your words pushed me to the idea ...". Let your interlocutor feel that at least part of what you have proposed is his own ideas.