Kids are pretty fearless when it comes to dreaming big about their futures. Ask a five year old about his or her career aspirations and chances are you'll be taken aback by the ambitious responses: astronaut, pro football star, bajillionaire, president. 

Some kids want to be all these things at once.

Ask adults, however, if their childhood dreams ever came to fruition and you're likely to get a more wistful response. 

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Continue Reading New study investigates: How many adults pursue their childhood dream job?