I first look at the target I want to hit and set myself up for the shot, so that I will be properly aligned with the target. From the time I start my draw until followthrough, I try to keep my mind free of cognitive thoughts. As I draw the bow, I try to expand my awareness to include all aspects of the shot: bow hand, bow shoulder, string hand, relaxed forearm, string elbow, back tension, etc. I don't try to control any of these aspects, just observe them. When I reach full draw, I decide whether I'm going to shoot the shot or let down. If I decide to shoot the shot, I narrow my concentration to the spot I want to hit for about two seconds and then release the arrow. If I feel my concentration is fragmented, I may repeat a mantra to myself (which I also learned from Joel Turner) during the 2 second hold: "keep pulling, keep pulling, etc." until I release the arrow. The mantra keeps distracting thoughts from intruding during the critical 2 second hold, and helps me to maintain back tension as I focus on the spot.
If I feel like I'm rushing my shots, I purposely draw the bow with the arrow horizontal, regardless of the orientation of the target, and then tilt at my waist until I achieve the sight picture I want, and then start my 2 seconds of concentration. I'm not as accurate when I shoot this way, but it keeps me from slipping into target panic. After a few shots this way, I can usually go back to drawing directly to the sight picture I want.