Hey moda,
Here's what I do for life tracking every morning. I just log the orange numbers and let the calcs flow through my spreadsheet. A wonderful friend once told me that everything boils down to just one number. And track that number. It took me a long time to digest that.
I never got down to one number, but I've gotten down to just a few numbers that I think are representative of how my life is going. I just log these numbers every morning - and chart the trends and interpretations.
Weight and Waist. They get low pass filtered and converted into lean body mass and fat mass. I just use the marine tape measure calcs. Not exact, but good enough to follow trends.
Resting Heart Rate. Taken in the morning after laying on the couch and after updating my various spreadsheets with the morning data. Resting heart rate is a reasonable poor man's proxy for Vo2Max - which my spreadsheet calcs and low pass filters. Again, not exact, but good enough for trend following. I use an iPhone app that measures heart rate via a finger held against the camera. It is astoundingly accurate.
Net worth. Well... yes. I hope it goes up over time in spite of the volatility. I follow the absolute values, the trend, the volatility... But really, I just update my spreadsheet every morning with my bank and brokerage accounts and the cash in my wallet and let the calcs flow through. This is the only number I need - to see if my spending patterns are lagging or leading my income sources. No other budget required.
Steps walked per day. I try to keep it over 10,000 on a 30 day moving average. It seems like regular mobility is a good thing. I can't swear to it, but that's what I'm betting.
Deadlift. I thought long and hard about a single number to represent vitality and the best number that I could come up with was how much can you bend over, balance and then pick up off of the floor. The deadlift is the ultimate metric of future lifespan. When that starts going down, you know you are fucked.
The important thing to note about all of these metrics is that they are not ends in themselves. Behind each one is an ever evolving plan. But... as far as I know - regardless of the plan - these are the best metrics of success.
Are you getting leaner and increasing muscle mass?
Are you getting better at processing oxygen?
Are you getting richer?
Are you outside, in the sunshine, moving around, engaging in life?
Are you just really fucking strong?
Again - these are the metrics - not the systems.
You probably have a system for eating that you futz with.
Maybe a workout routine - Old sKool - or whatever the latest muscle mag fad is.
You're investing with the PP - or day trading to get rich - or saving 10% of your salary.
I have separate spreadsheets for monitoring my finances and my workouts - but these are the numbers that I transfer to my daily "Captain's Log" every morning.
Whatever you are doing - try to come up with some objective metric of progress and use that to evaluate your process and scheme.
I've listed my metrics.
I'd love to see what anyone else is using for their "Just one thing"
It seems to me that there should be some way to track engagement with friends, family, loved ones, mentors and world geniuses.
I strive to stay connected with these valuable people - but I haven't yet found any way to measure if I'm doing well on that front. Any suggestions would be wonderful.
Mark