Writing 'I'm a hard worker' in a cover letter has become such a cliche that it won't impress employers.

cliche 来自法语，指"陈词滥调"或"老套的表达方式"，形容那些被过度使用而失去新鲜感和说服力的短语或想法。在写作或演讲中，使用cliche会显得缺乏原创性。