Knowing yourself is the beginning of all wisdom.
Without a beginning, there is no progression.
If we are to achieve something or change something in our lives, we ought to know our strengths, weaknesses, values, beliefs, leanings..
A strong discovery of inner us, could bring out an entirely different picture of us, of Life than one with no or feeble self-introspection!
Being more self-aware, leads to better Self-Confidence & Self-Esteem, as we get truer to ourselves!