Is there another way? if so share it with us . If you are aware of other methods of determining whether something is genuine /true /real you owe it to the world to reveal it, don't be so selfish.
Is there another way? Well, as I and others have pointed out many times, there is a sizeable 'extra-natural' element to real life - which same call the 'supernatural'. If one doesn't accept the existence of such an element, then whatever anyone says about it will simply fail to register for you.
Its rather like an aboriginal person from the middle of Australia being told about snow during the early years of the British colonisation of the continent. It simply didn't exist in their vocabulary or conceptual store.