Except you're making the assumption the article highlights: you're operating under the belief that there is a concrete thing that "you are" that you should know

Except you're making the assumption the article highlights: you're operating under the belief that there is a concrete thing that "you are" that you should know. As a person I'm constantly changing (or so I hope). Who I am now is not who I was ten years ago and probably won't be who I am ten years from now. I prefer to try and simply understand myself; understand why I think, feel, or believe what I do, understand why I make the choices I make, etc. That then (hopefully) gives me the insight to change and improve. As an aside, I've always found the human penchant for pigeonholing everything fascinating, especially when people do it to themselves. Many folks have a very concrete idea of who they are and aren't, and what they can and can't do... I see that as a real shame, as I often see people limit their own potential by harboring preconceived notions about themselves.