We should break our own rules when following them will violate our first principles. The rule is a proxy to the value we defined, and a rule is only as good as our ability to adhere to our values when we execute it.
Rules simplify choices, thus, rules reduce noise. Standards invite flexibility, introduce noise. Traditions can justify or hide noise. Algorithms are like rules, may include bias.
When we establish our methods and belief systems we should set an expiration on the choices we make, knowing that in a year’s time or two that revisiting our approach will be worthwhile.