What purpose would such a measure serve? And do you try to find a universal measure or one that is individual for every person? Because different people have different goals, you could try to measure how well reality aligns with their goals, but then you just select for people who can accurately predict what they can achieve.
I have a definition of success. For me, it's very simple. It's not about wealth and fame and power. It's about how many shining eyes I have around me.
--Benjamin Zander
What purpose would such a measure serve?
A crude check of how much you are lying to yourself, for example if you believe that reading LessWrong improved your life. You could enter some data and get the result that no, your life is approximately the same as it was ten years ago. On the other hand, you could also find an improvement that you didn't realize, because of hedonistic treadmill.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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