If the heart doesn't get to pumping,I think thats a good sign that your dead.The deer at 10yrds.is a awesome exsperiance,almost mistic like.Its wierd for me,some of the deer I almost lose my head aren't worth it and some of the nice bucks I'm at my best.The fever is not as bad since I started to let some pass.Now,what I do is,make the decision on if I want the deer the coming.If yes,I make the decision to shoot only if he gives me the shot that I know and feel very confident with.Believe me I have taken some bad shots and was sorry for that in the early days.I also do the slow deep breaths,and tell myself that I don't have to kill this deer.And most of all,consentrate on the SHOT and not on what comes after the shot.I sound like an old pro and theres nothing to it.But,the first doe of the year and sometimes I throw my own advice right out the window.