You could start with this list of U.S. counties with the most millionaires from CNN Money — and as the data shows, California and the southern part of the country are the places to be if you want to live close to America’s wealthy elite.

Tom Corley, author of the award-winning book Rich Habits: The Daily Success Habits of Wealthy People, spent five-years studying 233 millionaires and 128 poor people and surmised that often one’s wealth has more to do with habits. For example, Corley notes that emotional purchases are something that rich people avoid. A wealthy person will think twice before purchasing that sports car or designer dress. Those items at the checkout counter meant to result in unnecessary spontaneous buys? A wealthy person will more likely take a pass.

Online reputation has become new territory to navigate with the advent of the Internet. Along with the ability to easily communicate with anyone in the world comes the chance that your name can be tainted with widespread reach.

If the answer is “yes!” then you might be inspired by the following people; they’re the current top five richest in the world.

And all of them are self-made billionaires.

So, just how did they earn their massive wealth? And how much are they worth?

5. Mark Zuckerberg

Net worth: $58.5 billion

Source of wealth: Self-made; Facebook

While a sophomore at Harvard University in 2004, Mark Zuckerberg launched TheFacebook.com – an early version of what everyone knows today as simply, Facebook.