there is no one better to make a judgment of us than another person.
And even this is not true in many cases.
As Buster Scruggs said: "Sir, it seems that you are no better a judge of human beings than you are a specimen of one".
By the way, humans should not judge each other.
Only God should judge us. God is the best judge.
So the sentence above should be "there is no one better to make a judgment of us than God".
RE: How can we enhance self-knowledge?