At the end of each fishing session I tend to spend about 10 minutes thinking back over the day, the baits and methods used and evaluating the results (usually over that last cup of tea or coffee) and then try to take that into my next session.
I really have found that I seem to think more clearly at the water side rather than wait until I have driven home.
My fishing year however does follow a distinct pattern as I don't fish for coarse species during the Close Season preferring to fly fish for those months, and then again on into late July as my local rivers tend not to fish that well so early in the new season.
So, while the pattern doesn't change I still try to learn new things from each visit, or maybe just to reaffirm those that I already knew.