As we try to complete ourselves and push to make ourselves better, we tend to forget that He is hte creator and the only hope for change in us. Things that are not possible for man are possible for God.
A leopard cannot change its spot, so you do we think we can change ourselves. the only thionk worthy of you effort is a closer relationship to Him. He may chose to change you, but it will be His choice as to when and why.
Build that relationship… IT IS THE ONLY IMPORTANT THING. Everything else pales in comparison.