Things that you think, say, and do will be causes that have effects on something or somebody even if on nothing or no one but your own mind and your own body.
MY BELIEF IN GOD IS NATURALISTIC:
Unlike most people who use the name, God, I have a rational definition for the concept: I define 'god' to mean 'ruler'. When I write the name 'God' with a capital "G," I am referring to each one of the elements in my trinity working together in harmony.
Thus, for me: (1) Nature is god of the Universe. (2) Humanity is god of the planet Earth. (3) My own mind is god of my own body.
I SERVE NATURE BEST BY KNOWING AND OBEYING THE LAWS OF NATURE AS MUCH AS I CAN DETERMINE WITH SCIENCE AND MY SCIENTIFIC THINKING. I SERVE HUMANITY BE BEING HUMANE. I SERVE MY OWN MIND BY CONTINUOUSLY LEARNING AS MUCH AS I REASONABLY CAN, AND THINKING OPTIMISTICALLY, HEALTHFULLY, AND WHOLESOMELY WHILE ENJOYING EVERY MOMENT.