Is your why clear ?

I feel that I'm called to do something bigger, but some people are not able to understand the magnitude of that vision. Only I can understand, and I'm not able to explain it to others. Now, how do you deal with that? Is only explain it to people who truly understand it. Like, you don't need to explain it to others. You don't need to seek validation from anyone and everyone. Now, even if you explain it to someone and if they don't get the bigger picture, that's also fine, as long as you know that this is where you want to go. Now, the key here is there may be many things that you may not know. Like even in my case, there are many things— it may be a big vision, but I do not know how it's going to happen. I don't know the how part yet. I just know the why part. When the how is still unclear, but the why is clear, the what will start to show up. And you just need to focus on what has to be done, and how it's going to happen will happen on its own.