“Selfishness—self-centeredness! That, we think, is the root of our troubles. Driven by a hundred forms of fear, self-delusion, self-seeking, and self-pity, we step on the toes of our fellows and they retaliate.” (Page 62, Big Book)
If I think I’m at the centre of the universe, and you think that the centre of the universe is either you or God, in either case our topographies do not match; in our perceptions, we’re living in two different universes.
No wonder there is collision: we are not proceeding based on the same set of ‘facts’.