Marcus Aurelius once wrote to himself, "If someone can prove me wrong and show me my mistake in any thought or action, I shall gladly change. I seek the truth, which never harmed anyone: the harm is to persist in one's own self-deception and ignorance" (see Meditations 6.21).
Similarly, Epictetus reminds us that we should listen to reason and not just "adhere unswervingly to every judgement that [we] have formed (v. 2, p. 103). Rather, it is more important to first make a sound judgement before stubbornly sticking to it.
He tells someone, "If your decision is justified, look, here we are at your side and ready to help you on your way; but if your decision is unreasonable, you ought to change it" (v. 6, p. 104).
Substitute the word 'decision' with words such as: culture, tradition, religion, or the way things ought to be, and the advice applies.
So many people don't challenge their assumptions - including me! We must challenge our assumptions with sound reason.
Epictetus responds to the person who says, "we must stick with a decision."
"Don't you wish to lay a firm foundation at the beginning, by examining Whether or not your decision is sound, and then go on to establish your firm and unwavering resolve on that foundation? But if you lay down a rotten and crumbling foundation, you shouldn't try to build on that, but the bigger and stronger the edifice that you heap upon it, the sooner it will come tumbling down (v. 8-9, p. 104).
Further reading: www.rockyrook.com/search/label/Mormonism