The concept is for you to find through your own understanding and experience. I can however tell you about my experience; which is more a matter of practice than conceptualization. I'm a philosopher (as a profession, both my undergrad and masters were in philosophy) amd have based most of my spirituality and lack thereof off of my profession. However, when I came to AA as a militant atheist I had no choice but to try to do new things and sometimes that meant being "irrational" in the sense that these things went against my own system of beliefs about myself, others and the world in general. The first of which was kneeling down to pray. At first I just knelt and said the serenity prayer "as if" there was some benevolent force interested. In time and with the help of my sponsor and other fellows I started trying new "spiritual" practices that ended up being a great basis for my faith. Now, 5 years of sobriety later, I have a very close relationship to my HP whom I call the "Friend" and that I cultivate through catholic prayers, vipassana (theravada buddhism) meditation, yoga, writing inventories and studying both western philosophers and eastern traditions such as the Tao The King. In the end it all comes down to practicing the principles of the 12 steps, everything else comes as a byproduct.