The great changes in civilisation and society have been wrought by deeply held beliefs and passion rather than by a process of rational deduction.
That's a spiritual lifestyle, being willing to admit that you don't know everything and that you were wrong about some things. It's about making a list of all the people you've harmed, either emotionally or physically or financially, and going back and making amends. That's a spiritual lifestyle. It's not a fluffy ethereal concept.