President of the United States of America
After a few years of learning about history in elementary school, kids have that desire to be the next Abraham Lincoln or George Washington.
But compared to other jobs on this list, the formal requirements for becoming the most powerful person in the country are simple. Candidates must be at least 35 years old, be born a U.S. citizen and have resided stateside for the last 14 years, explains Barry Burden, a political science professor at the University of Wisconsin-Madison. The unspoken requirements are tougher, though. Most presidential candidates graduate from a top college, gain law or military experience, establish a history of public service and cultivate an enormous network of supporters. All stomach the invasions of privacy.
"Your life will be on display. Your personal relationships, your record as a student … your financial situation, (and) your tax returns are often revealed," says Burden. "I think we're seeing more of that now that so much of our lives (are) recorded digitally."
Positioning yourself to become POTUS has to start early, Burden says.
"A person can't wait. They have to go almost directly from high school to college, college to law school or medical school or military service, and then from there into public service, running for office somewhere or serving in some capacity -- and then beginning that climb," he says.