It has been claimed on this site that the fundamental question of rationality is "What do you believe, and why do you believe it?".
A good question it is, but I claim there is another of equal importance. I ask you, Less Wrong...
What are you doing?
And why are you doing it?
I see a lot of value in the post, which can help a person to expose a disconnect between their normative ideal of what they should do and what they actually are doing. A large part of the point is that this rationality stuff is not just theoretical, it has practical implications, and we should remember to apply the practical lessons in our daily lives.
The short, easy to remember "What are you doing? And why are you doing it?" is great for prompting oneself to examine how well they are practically applying rationality, how effective they are at achieving their goals.
Perhaps, but at its current state, it still seems more appropriate for open thread. For a top-level comment, I would expect to see more detail, take us through examples, and generally provide a more thorough exposition of how to best go about the process.