You know what it's like. A comment here, a closed door there, turning a blind eye to get ahead.

My name is Sarah Lai. You won't have heard of me. A decade ago I was on the cusp of being a big deal. But that was a long time ago.

Now, instead of working in Hollywood, I teach students about it. And these are the two most important lessons you need to know about the film industry:

1) Those with the money have all the power.

2) Those with the power get whatever they want.

Ignore these rules and the whole system will crumble. Stick to the rules and you'll succeed.

But at what cost?

Ask yourself, what would you have done?