While Judaism demands that one does not judge oneself too harshly, nor live in a place of self-defeating criticism, nevertheless there's a vital role for self-judgment to play in our learning from the past to walk with God and expand our ability to channel holiness into the world.  In fact, since God loves us as we are, and even provides a Shabbat that makes us feel that the world is made for us as we are, it is vital we judge ourselves, because that's not the job God wants, nor is it the job for others to do.