Create a new heart

I can change my habits, but I can't change my heart.
Only God can.
However, the Bible, actually teaches that there is a  combined work between us and God in order to create a new heart. (Ezekiel 18:31 and 36:26)
Our duty is to apply our heart to a change and trust God for the realization.

Faith is the substratum for life changing. We are supposed to believe God's principles and to practice them if we desire a completely renewed mind and heart.