A brilliant idea doesn't make a successful business. Accounting does.
That's according to Tilman Fertitta, the self-made billionaire and star of CNBC's "Billion Dollar Buyer." Now worth about $3 billion, Fertitta started by peeling shrimp in the back of his father's restaurant in Galveston, Texas.
In an interview with CNBC, Fertitta says the one piece of advice he would give to every young, 20-something entrepreneur is: "Don't ever let your business get ahead of the financial side of your business. Accounting, accounting, accounting. Know your numbers."