Are you learning from watching yourself shoot? Do you keep tabs on how you're doing when you compete? Rick and Larry have been shooting for more than a decade and they discuss how they keep track of their individual performances in competition.
You can download the excel spreadsheets that Larry spoke of here : http://www.powerfactorshow.com/files/larryperftemplates.zip
If you don't have EXCEL or prefer to use this on Google Docs, you can get to the spreadsheet here : https://docs.google.com/spreadsheet/ccc?key=0Am4pDqLltXKfdGgybTRFQ0lpZEFZd19oeEo1b2wtZHc
(Thanks to JohnM for converting it to Google Docs)