I'm not so sure you should default to assume prejudice, because every bit of advice has some benefit (even if it's just an insight into what the other person th

I'm not so sure you should default to assume prejudice, because every bit of advice has some benefit (even if it's just an insight into what the other person thinks is importnat). You bring up a great tactic, however: discovering your flaws by some other means. The best practice I've heard is to seek comments from a neutral third party, like a professional acquaintance or coach. A friend or SO will go too easy on you by design.