Hello there, I would say that I know myself very well. I am the expert on me… yet, I have, in the past couple of weeks learned about me in ways I didn't know I would. So what of this knowing that I was so sure about? Is it possible that what I believe I know is just what I have decided to tell myself or what I know about me so far? I believe we put a little too much stock in who we know we are and what we know to be.
When we admit we have no idea we open up the possibility for learning. I am not sure exactly when we become so rigid, but we all do. At some point we actually believe that we KNOW something. We think we know about others, the world, and ourselves. Regardless of how many times we are shown something we didn't know before, at some point we begin believing that we know crap. When we say we know, we cut off being open to what else is there. When we say we know, we are soon shown otherwise.
Understand that everything is in flux, nothing stays the same, what we know is going to change. We may think that it is important to have information, to master all things that we have chosen to. There is nothing wrong with that inherently. It is possible to master what we decide to until we are shown the deeper levels of that thing. There are always layers to things that reveal themselves only after we are able to see fully the layer that we are on (or when we think we are done learning). There is always more, always.
When you find yourself in a place where you are stuck on knowing change your language. Instead of definitive responses say that you know what you like in this moment, or you know where you would like to be at this point. Knowing, like everything else, changes. Stay curious and enjoy the journey.