Game of Thrones is an incredible HBO series based on the book series. The story revolves around the constant battle for the crown whether it’s at the king’s council, the battlefield, or behind closed doors. I wondered what lessons could be learned from this show about business and leadership.

Rule #1: Winter is Coming

House Stark’s famous words were “winter is coming.” Startups of the summer don’t realize the hardships of winter. When you start a company in an amazing funding environment and lofty valuations, you don’t realize how hard it will be when the season inevitably changes. You must be prepared for winter when everything will freeze up.

Rule #2: The Decider Must Be the Doer

Lord Eddard Stark sentenced a deserter to death and was also the man who executed the deserter. He believed that people should take responsibility for such important decisions. In business, if you’re going to fire someone or terminate a contract, you need to own up to it and be the one to do it. You can’t hide behind some emails or subordinates.

Rule #3: Piece of Paper Won’t Protect You

Even with an official statement by the king, Eddard Stark could not carry out his orders. The power hungry queen simply tore up the words because she had greater man power. It just goes to show that even a contract won’t stop the worse from happening. You have to be able to trust people you deal with to avoid that — or at least have the capability to control your own fate if push comes to shove.