I kind of failed at that pretty badly, though while it lasted it was a great exercise. I'll trying getting into it again. That it is impossible really isn't under dispute at all, what is under dispute is if it is useful to strive for such a state of mind.
Same can be said of human rationalism.
I don't think that answer to our human flaws is to retreat from trying to implement our terminal values. In other words, Politics is the MindKiller is not a certainty, simply a failure mode that society and its members have spent essentially no effort trying to avoid. If one can develop a sufficient level of self-criticism, one can do far better than the statistical norm.
That's been my strategy, anyway. Reject all false arguments, whether or not they lead to conclusions I like. If you think I've failed at that goal, I'd welcome your feedback. Crocker's Rules - for you, on this topic.
http://unqualified-reservations.blogspot.com/2013/01/noam-chomsky-killed-aaron-swartz.html
Summary: Moldbug on the Aaron Schwartz affair. Power is a very real thing with real consequences for activists, yet many people don't understand the nature of power in modern times. People like Noam Chomsky get great fame doing bad epistomology about who has power, and as a result do great harm to idealistic nerds who don't read between the lines to selectively target their attacks at weak institutions (Exxon, Pentagon) instead of strong ones (State, academica incl. MIT).
Here he returns to a theme that is one of his real contributions to blogospheric political thought: that victory in political competitions provides Bayesian information about who has power and who doesn't. If your worldview has the underdog somehow systematically beating the overdog, your epistemology is simply wrong - in the same way, and to the same extent, as a geocentrist who has to keep adding epicycles to account for anomalous observations.
This means that activists like King, Schwartz, and Assange are only effective in bullying the weak, not standing up to the strong (despite conventional narratives that misassign strengths to institutions). When such activists stop following the script, and naively use the same tactics to attack strong institutions, reality reasserts itself quite forcefully: