Me too!!!
I have a little form that I fill out every time I ski, stuck to my dashboard. On it I write the cost of everything (gas, tolls, food, gear, lift tickets, lodging, etc.) At the end of the season I will tabulate just how much this obsession is costing me (gulp!) (Also, I want to know just how many days I really skied, and if there's any way I can save money, I'll be able to figure that out too.)
On another form I also write about what I learned, what I need to work on, frustrations, unanswered questions, triumphs, humiliations, and sudden realizations,. I then transpose those thoughts into a ski notebook. I want to look back on it in a few years and recognize that yes, I have come a long way.
If not for us compulsive organizers and documenters, how would all those laid back mellow people know that they were mellow?