What's the Spark in the Rookie Season?

I think it's what he showed on Hard Knocks when he was talking about just when you see the light at the end of the tunnel. It's a freight train coming your way. That's kind of literally what that's Dan Campbell right there. I'm looking at my chops already at year two, man. You're trying to get more powerful. And obviously, getting faster, stronger, all those little things. But also focusing on the mental side of the game, visualizing, the meditating, especially in the office.