Dan Rosensweig worked with a number of industry leaders before becoming the CEO of Chegg, and his experience taught him to recognize practices of successful leadership. He suggests that aspiring entrepreneurs think big and optimistically. Solve problems, but don't whine about them. Surround yourself with people smarter than yourself, and give them the freedom to execute, trusting them to course-correct as they learn and improve. A great CEO doesn't need to be the smartest person in the room, states Rosensweig; they just need to know where to find an expert on any subject.