Ezekiel 11:19 "And I will give them one heart, and I will put a new spirit within you; and I will take the stony heart out of their flesh, and will give them an heart of flesh:"
Ezekiel 36:26 "A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh."
As I read these scriptures, I thought about how the Israelites had served gods made by hands, often carved from wood and stone. In some ways, the stony heart was a reflection of the god they served. Likewise, Jesus, Heaven's royalty Who robed himself in flesh, is my God. I want my heart to reflect Him. His nature. His actions. His love. I want a heart like His.
Tip/Tidbit: To discover what forms our hearts, we must ask ourselves: Do I yearn for God and love others, or do I want more of what this world has to offer?