Cee Cee Marinelli, 33

Cee Cee Marinelli thought she was headed to law school in 2005, when she took a class in urban economics at Elon University in North Carolina.

That’s when she became fascinated with the work that goes into a development project. She called her father, Paul Marinelli, then president and CEO of Barron Collier Cos., the giant agriculture and development firm managed by the heirs of the county’s founder. “I want to do what you do,” Cee Cee Marinelli told her dad.