After 20 years of bowhunting and plenty of "kills", I measure my bowhunting success as experiences and goals I set for myself prior to the season and it is never about bringing home venison. I don't set my goal to bring home a deer, if you do, you fail more than you succeed and I don't call my time in the woods a failure.
Here's a link to my HNI journal that explains it more. I'd love feed back on it.
http://www.huntingnet.com/fieldjournal/fieldjournal_detail.aspx?nID=179