Beliefs create behaviors, and the dysfunctional behaviors of the human race, observable everywhere every day, are the product of our non-workable beliefs. Chief among these is the belief in separation, which has arisen out of our ancient Separation Theologies. This is a way of looking at God that insists that we are "over here" and God is "over there. "
The basic philosophy of stoicism is that you have nothing real external to your own consciousness, that the only thing real is in fact your consciousness.