Advanced rationality techniques, at least when applied to one’s self-conception and life choices, are basically therapy. “Failures of basic rationality” are often better described as “mental health issues”. Therapy is how you deal with mental health issues. People with mental health issues need more therapy/advanced rationality, not less! I’ve seen it hypothesized that one reason we have so many mentally ill rationalists is because people with mental health issues must learn rationality in order to function, at least to some degree that is more than most people need.
This reminds me of Romeo’s comment over here:
http://lesswrong.com/lw/oym/how_id_introduce_lesswrong_to_an_outsider/dryk