What’s the one thing you mustn’t forget when you leave the house?

It’s not your wallet. It’s not your phone. It’s not even your clothes.

It’s your key. If you forget everything else but have your key, you can go back in to get whatever else. But if you don’t have your key, you’ll be locked out of your place and everything in it.

In anything worth defending – a person, a job, an idea – it’s critical we know what the key is; the thing that will allow us to go back no matter the circumstance. For a person, it might be love. For a job, it might be fulfilment. For an idea, it might be passion. If we lose anything else, our precious possession might be injured, but not broken. Once we lose this critical part, the game is over.

Don’t forget the key.