Here's One Weird Trick™ to avoid being an ideologue: be ok with being wrong. Flipping that over: aspire to be correct in your beliefs, not in "being right". Karl Popper (the man behind the Intolerance of Intolerance "paradox) identified it: https://en.wikipedia.org/wiki/Falsifiability
As stated on Wikipedia:
> Falsifiability is a standard of evaluation of scientific statements, including theories and hypotheses. A statement is falsifiable if it belongs to a language or logical structure capable of describing an empirical observation that contradicts it.