Uhh, why not just accept that you aren't and can never be perfectly rational and use those facts in positive ways.

Bubbles are psychologically comforting and help generate communities. Rationalist bubbling (which ironically includes the idea that they don't bubble) probably does more to build the community and correct other wrong beliefs than almost anything else.

Until and unless rationalist take over society the best strategy is probably just to push for a bubble that actively encourages breaking other (non-rationalist) bubbles.