Consult different sources, think for yourself, trust your gut and discard dogma in all its forms. Realize that whatever the source, whether it’s a person, an organization or even a book, even “holy” books; it comes with its own inherent bias. If it is in accord with your own biases, acknowledged or not, you are more likely to believe it is “the truth”. All so-called truth is relative, just as our perceptions are.