We have a lot of limiting beliefs that we're not even conscious of. Maybe your family taught you you weren't good enough or you weren't smart enough. Perhaps we're taught that this religion is good and all other religions are bad. It's endless.
We were young, we were merry, we were very, very wise, And the door stood open at our feast, When there passed us a woman with the West in her eyes, And a man with his back to the East.