I'm sure it's different for all of us, since we all come from different backgrounds and experiences. There's no one "magic bullet" or single red pill; it varies for each person. And it seems some people never snap out of it.

My father bucked the trend from what was typical and it helped instill a contrarian and independent streak in me. Disillusionment with politics over the years and discovering libertarian and anarchist/voluntaryist thought has also helped me to see through the lies. And lots of reading, too, about the CIA, NSA and FBI (the sources of the psyops perpetrated on us now), their assassinations of JFK, RFK, MLK Jr. (and many, many others overseas). In college I realized Lincoln basically became a dictator and subverted the Constitution in prosecuting the "Civil War," which was really the War to Prevent Southern Independence. The South was legally right though wrong morally on slavery (but it was economics, not slavery per se, that started the war). In college I also read a book called "Bitter Fruit" where I learned how the U.S. government overthrew the democratically elected government of Guatemala and installed a repressive dictatorship more amenable to U.S. interests. Then they did it again in Iran, and other countries until failing in Vietnam. With 9/11, I realized Tower 7 was not hit but still fell like a controlled demolition, then I realized we were lied to about 9/11, WMDs, bin Laden, and so much more (Operation Paperclip, Operation Mocking, MKUltra, etc., etc.)