Don't beat yourself up to bad about it. Hell I've missed two 130's this year. Like Shaw said make a checklist and focus on it and not the deer. Until you kill one try to keep your shots under 30 yards and at 30 use your 20 yard pin. Hold on the bottom third and the deer will do the rest. When you get to full draw make sure your sight is centered in the peep, level is level, your using the right pin and pick a spot and focus on that spot. Don't drop your arm to see where the arrow is going. Focus on these things and not those knees knocking together. And I've got Shaw beat. I missed one at 8 yards one morning and killed him at 52 yards when he stopped to figure out what just happened. I'd suggest you take a few practice shots to make sure that there's no equipment problems and to get your confidence back before you head out on the next hunt. Stay after it, it will all come together.