Here's a definition from www.dictionary.com
to perform better or achieve more than expected, especially by others.So, why is it when we label someone an overachiever we don't mean someone who performs better than expected? Is it jealousy? Are we so envious of their accomplishments that we can't just say "good job"? In reality, what have we really lost because they succeeded? Zip, zero, zilch.
I say cheers to the overachiever. Way to go! Whether it's school, work, running, working out, let's all aspire to overachieve.