Can you really every KNOW THYSELF?

I was talking with a friend of mine this weekend who pointed out that we can never really KNOW THYSELF. Interesting point to think about.

The DYNAMIC TRANSITIONING (TM) program begins with KNOW THYSELF as a prompt to begin paying attention to who you are, what you believe in, what your values are, what you bring to any given situation, etc. I do agree that who we are is not a fixed point in time...we are all "transitioning" every minute in one way or another. KNOW THYSELF is a starting point and a process, maybe not a destination.

Your thoughts?