Hey TT,
What is the source or goal of human Life?
Our source was a seed of divinity (intelligence) and our goal is to grow into divinity.
Death is the end of Life, the force returns to the source.
Heaven is a fantasy of Life, and due to the creative power of 'one', Life can attain and ascend to in the future.
It is not possible to live an ideal heavenly Life in this world, here and now. Unless you could lie to yourself and that would kinda blow your heavenly. We are one.
Yes it is possible to heal (change) the Human of Earth. It can happen with the accomplishment of the basic goal of all Religion and Philosophy, Unity.

peace & Love