Confident. Relaxed. Focused.
Confident
I've had enough time to do a walkthrough. I had figured out all my positions and reloads, down to feet placement. I've shot a similar stage before, and know where I need to slow down and where I can speed up.
All preparations are done. I'm ready.
Relaxed
I'm confident that I can shoot the stage well, it's time to relax and just let things happen. The relaxed state prevents little mistakes like trigger freeze, over-running the position, or bad follow-through.
It also allows us to get rid of any conscious thoughts during the stage and truly live in the moment.
Focused
There's nothing but grip, trigger, sights, and targets.
True focus.