I'm not convinced anyone is. Full objectivity is hindered by our minds ability to guess and rationalize.
Personally I find all attempts at self-knowledge are just a constant game of trying to sieve truth from rationalization, and I go back and forth on which is which constantly. Ultimately I cannot tell the difference within myself, and I cannot trust that anyone else can either.
I wasn’t speaking to a philosophical maxim, but rather practical application. Self-awareness is a real thing that can be objectively measured comparative between different people.
What's your method for measuring that? The general personality models that I've seen really only seem to be testing for a minimum amount of self-awareness.
> Full objectivity is hindered by our minds ability to guess and rationalize.
One of the main claims of some meditative traditions is that with enough practice you get to experience the workings of the mind. Once you get to experience them directly, you can see that they're projections and you can see through them.
Personally I find all attempts at self-knowledge are just a constant game of trying to sieve truth from rationalization, and I go back and forth on which is which constantly. Ultimately I cannot tell the difference within myself, and I cannot trust that anyone else can either.