Yes the fever affects us all. I will relate a story of a very calm and seasoned hunter that may help to explain how we can trick the brain into doing the job at hand and not worrying about the rack! 4 Years ago we were on our annual Bow moose hunt, one of the guys (a guide and very experienced hunter) was set up in a perfect position to get a shot off on a 50" bull moose we had working to the call. To shorten this story we found him beating himself up, asked what happened(all knowing to well it wasn' t good news)...he simply stated all I saw was that huge rack over my fireplace and my arrow split the up rights!!!! Yeap you guessed a bull moose that has a body cavity many time bigger than a deer and his arrow went between the rack[

]. He said I swear I was aiming at his vitals, but must have went back to his rack and fired! The moose was less than 20 yards from him broadside! Now later that week he had an opportunity for redemption, this time getting it done. When asked what happened differently to ensure the shot was true, he simply stated " All I saw was a big freezer behind them antlers and focused on the freezer portion!!!!" In the past 3 years he has taken 3 bulls to follow, always focusing on the freezer portion....simple way of training the brain or himself what needs to be focused upon.
I can tell you there are times when I still get that rush feeling(bow or gun), but having experienced it like taz and my buddy. I think through what is required, before I take action.