I keep logs of range trips and of dry fire practice. I also keep a more extensive "journal' of match experiences. Ala, Lanny Bassham, I prefer a positive approach, with reminders and wins. Instead of "I didn't have my gun up when coming into position," I record "Remember to get gun up when coming into position." And I always write down the good stuff that happened, "Ran with grace." (Ok, that never happens.) "Made smooth target transitions." I never want to go back and read about what sucked. If I failed at something, I make sure to log what I will do to improve rather than what sucked.