Again, you're assuming synergism.
In farming, soils don't condition themselves, the farmer does it.
And this fits perfectly with Scripture, which teaches that it is GOD who gives us a good heart:
Ezek. 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:
Ezek. 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.