i agree with the other posts, i think i originally read this in the context of someone wanting to help their friend leave an abusive relationship, but basically: it has to feel like 100% his own idea/decision. i have a buddy i've (mostly) rerouted from the pipeline, and initially i very dumbly just scolded him and tried to guilt him into changing his beliefs, which obviously made him double down (i dont know if its ego preservation or what, but it makes sense--itd be hard to respect yourself if someone basically nagged you into changing your political outlook). what worked much better was linking him to lefty content that was funny and persuasive and common-sensical and letting him sort of put it together himself. there's hope for him--all that /pol/ shit is a weird stand-in for a social group, so he's probably feeling pretty lonely/alienated. one of the biggest things in helping my friend's de-chudification was actually the chapo reading series on ben shapiro's shitty novel, where the hideous racism in it was as ridiculous and stupid as it was repugnant. if all else fails try to feed him your cum