As a person that grew up in the church and a military family, I understand how the constant repetition of ideology can transform into a version of truth. It took a pretty big effort on my part to unlearn a lot of the lies about the world I was taught as a kid.
But at some point in time you have to recognize what beliefs might be helping you, but hurting people not like you.
Racism, sexism, homophobia, et all are all examples of personal belief systems that sustain human regressiveness.