Don't stop bowhunting unless you just don't like it anymore. mistakes are going to happen. You are going to wound deer. It's the nature of the beast. No one can be 100% perfect 100% of the time. When I was younger I had my share of wounded deer. One day I decided that I had enough and changed the way I hunted. I focused more on my shot placement, aim small miss small. I didn't take any shots over 20 yards with most inside of 15. wait for good shots not maybe shots. Let the deer get broadside or quartered away. You may have to pass on a few deer, but there will be others. Also, practice practice practice. Eventually you will develope a muscle memory for shooting a bow. I am proud to say that I have not wounded a deer in 7 years and have killed at least one with a bow for the last six. Keep your head up and good luck.