objective self-evaluation is tricky

So it's easy to lie, but even with the best intentions,objective self-evaluation is tricky.Take this question from the Big Five:How would you rate the accuracy of the statement I am always prepared?There're a clear favorable answer here,which makes it difficult to be objective.People subconsciously aim to please:when asked to agree or disagree,we show a bias toward answering however we believe the person or institution asking the question wants us to answer.