Thanks for sharing your thoughts.
I, personally, have learned not to care about the fact that the others have a different opinion or do not agree. But I focus on why they disagree. I want to find out the rationale. Not because I want to defeat their arguments, but because I want to understand what the other views are.
I am then typically asking questions in the style of “if you would be in my position, what would you do?” or “if you have full power and resources, what would you do?”
Then, I am gaining more facts and other perspectives but can still have my own view or idea. Or, I can change or adjust it. It gives me more freedom.
I had dinner recently with a friend of mine, where I was discussing one of my business ideas. Because she is working in this industry, she knows a lot more than me. For each sentence from my side, I was confronted with a bundle of questions from her. It was quite an exhausting conversation, and I finally had many doubts about my idea, and I was in the process of throwing it away. Surprisingly, she closed the topic with “well, you could reasonably answer all my questions. I think it is a good business idea, and if you need support, I am happy to support you with my knowledge.”
Yes, some people are always disagreeing and saying ‘no.’ And if you are asking them some questions, they reply with “you have to know it, it is not my idea.” Then just don’t care about them and move on to the next topic.