RE: buck fever/ animal fever
The only thing that really made any noticeable difference for me was experience. The first time I had a deer in front of me I was so nervous and cold that I couldn' t draw my bow back. Through the years you get over it and it' s like second nature.
Although I still get excited in anticipation of a shot, I try to concentrate more on keeping still, thinking about where the deer is headed, and picking a spot to shoot rather than if I' m going to get a shot or not. Every time I see a deer I tell myself I' m going to get a shot, instead of worrying about whether it' s going to happen or not. It' s the anticipation that kills ya.
Other than that, just try to take a few deep breaths and stay focused.