I don't think about shooting the animal because my heart rate and blood pressure are already up if I'm at the point where I'm going to draw the arrow back. Thinking about if I'm going to hit or miss when would just screw me up completely. As I'm going through my drawing-aiming-releasing sequence, I'm running through my shooting checklist in my head...bow hand/arm/shoulder relaxed, string at full draw and hand properly anchored, finger off trigger until checklist complete, am I using the right sight pin for the known/estimated distance, aim at a specific spot on the animal, check for clear shot, check for quartering away/broadside shot. If I'm at full draw for a long time, I keep running through the list so that I'm not thinking about the act of shooting the animal. When I have a 'GO' on all items on the checklist, the finger goes on the trigger and the arrow is on the way.