The spiritual development of man is not a human achievement, but a work of divine grace. (Louis Berkhof, 19-20th century American-Dutch theologian)
We may try all the self-help tips and books on spiritual development to improve our integrity and reputation, but the solution to our problem is beyond our best efforts. Although the body and the spirit are inextricably entwined, the foundational element is in the spiritual side. As it grows in understanding and wisdom, it will express meaningful life through the physical.
The Lord’s light penetrates the human spirit, exposing every hidden motive. (Proverbs 20:27)