One way to uncover those beliefs is to look at our experiences and work backward, asking ourselves what beliefs caused a event or situation. When we have a flat tire, and someone immediately stop to assist us, be belief might be that everything we need comes to us. If we are in continuous conflict with other, the belief could be that the Universe is not aa friendly place. When we determine our beliefs that we picked along the way really serve us or not.
The only true perception is that of Oneness. When we base our perceptions on the truth about the God within, we create life affirming beliefs that lead us to a great expression of Spirit.