We've all those moments at the dinner table: the brilliant idea that's going to take the market by storm.

Most of us leave the idea there. After all, starting a business is a lot of work and usually involves a fair amount of risk.

But for those who want to take that good idea and make it a reality, where do you even begin?

Richard Turner has founded businesses across four different industries, most recently ZEN Energy, and was, for a time, the entrepreneur in residence for the University of South Australia.

In the Drawing Room, Richard shares his experience in business and the lessons he's included in his new book, The Essential Entrepreneur.