You can remember the answer and forget the question that once made it urgent.

Conclusions outlive their circumstances. You worked something out under pressure, adopted a rule, and the rule stayed while the situation that made it necessary faded from memory. Now you follow it without knowing what it was for, which makes it very hard to notice when it stopped applying.

Take one firm position you hold about yourself, about work or trust or money, and try to recover the question it answered. If you cannot find one, that is worth sitting with. Rules whose questions have expired are the easiest kind to keep obeying.