Occasionally the spirit intervenes and tips the balance slightly in its desired direction. This is action of the will. All observable life originates from living parentage which raises the question of where the first life came from. Materialism asserts that it sprang from a fortuitous set of circumstances, the right atoms just happened to meet at the right temperature and pressure etc. A living organism is more than the sum of its parts.
Life is of a different order of complexity to the non-living.
Human character is largely predetermined at birth, and reflects the nature of that unique spirit or soul allied to the physical body. Attempts have been made to categorize personality but individuals may not be pigeon-holed, each having many traits in infinitely variable degree. The existence of life on planet earth is of finite duration. It has not always been there and will eventually be there no longer as the planet becomes inhabitable through the misuse of its resources or of man's technological capabilities or when the sun finally burns itself out. It's likely that human life will die with the planet unless the privileged few develop the ability to migrate elsewhere.