Hang in there. Your time will come. There is nothing wrong with a young deer, small buck yes, but a young doe is just a tasty morsel. As far as missing, all we can say is practice more. The more you practice the more confident you become with the weapon in your hands. I applaud you for not taking questionable shots. There is no shame in letting one go as opposed to crippling it and never finding it. As far as the length of time that I have gone without harvesting a deer. It' s about 9 months. I usually harvest one during the first week of bow season (OCT) and one during the last week of our season (JAN). In between I take several.