Stop expending so much energy trying to be somebody new.  Instead, spend your time trying to become the person God already created you to be.  In doing so, you will find and fulfill your divine purpose.

Psalm 139:13-16 (NIV)

13 For you created my inmost being;
    you knit me together in my mother’s womb.
14 I praise you because I am fearfully and wonderfully made;
    your works are wonderful,
    I know that full well.
15 My frame was not hidden from you
    when I was made in the secret place,
    when I was woven together in the depths of the earth.
16 Your eyes saw my unformed body;
    all the days ordained for me were written in your book
    before one of them came to be.