I have been hunting for 16 years. I have shot everything with my bow from a doe to a 360 pound black bear and I still get buck fever if I see a decent shooter buck. It's part of the game and excitement of seeing a great creature in the wild. I try to make believe it is a doe and not look at the horns. I know that is difficult but practice on spikes and smaller bucks. Just tell yourself that you are not going to shoot and later on if the opportunity presents itself see if you can get within range. Seems to work sometimes