My bowhunting sins were many this past season... resulting in zero deer in the freezer.
1. Missing because I failed to pick a spot! I know better, but in the moment this is the toughest thing for me. Not sue why, I just see the whole deer. So I'm trying to work on this in practice more.
2. Being lazy about scent control. I know scent can never be eliminated totally... and I'm not going to spend a bunch of money of "scent proof" clothing. But I know there are common sense steps I can take and I'm already working on it for this season.
3. Staying loose when it's really cold. My worst moment last season came the day after Christmas. It was about 8 degrees with the windchill and I had been sitting for three hours. I had a doe come in to 10 yard. I went to draw back and I literally couldn't pull my bow back to anchor. I let down and tried again... still couldn't get it back. I was frozen stiff! Then I made and even worse decision and tried to shoot without hitting anchor... resulting in a poor shot. Stupid!
Fortunately that doe lived despite the wounding as I saw her later on my trail camera. Moral of that story... pull back your bow a couple times every hour in cold weather. And don't take the shot unless you reach full draw!