There is no shortage of advice out there on how to make a good impression -- an impression good enough to land you a new job, score a promotion, or bring in that lucrative sales lead. Practice your pitch. Speak confidently, but not too quickly. Make eye contact. And for the love of Pete, don't be modest -- highlight your accomplishments. After all, a person's track record of success (or a company's, for that matter) is the single most important factor in determining whether or not they get hired. Or is it?