First thing I do is decide whether or not I want to shoot a particular deer. After that I never look at the rack again and go into a full on attack mode. All focus is on bringing the deer into a spot I can get a shot and then concentrating on executing that shot. I don't know how to describe it other than I go into an almost complete "in the zone" trance. The only time I have any nerve problems is on a doe usually early in the season when I skip step one. For me, making the commitment in my head to shoot a particular animal and then going to full concentration to accomplish that goal, eliminates any 'buck fever'. I'm excited yes, but in control. Most of my hunting is from a tree stand.