You must go through the fire if you want to be strong as steel. In this episode of the Next 90, Nick uses a parable about how a sword is made and correlates it to his own life. You can't develop grit if you don't go through some shit. Nick personally thanks all his haters, negative relationships, assholes, and shitty business partners for putting him in the fire. Nick is using the fire to become better and better everyday.