Are a man's personal foibles always an indictment of his ideas? The whole idea behind 12 Rules for Life is that the whole fucking endeavor is often brutal and hellacious; that man can become mired it's arbitrary, painful, seemingly meaningless vicissitudes. In that case, that Dr. Peterson was susceptible, succumbed, then overcame is little indication that he's "fucked up." Au contraire, it demonstrates that he's, in fact, an exemplar of his philosophy.

I hope you aren't standing anywhere near a glass house.