Maybe he isnt cured and just manages it like some others (myself included in that category)
Im always wary of people who write books about recovery stuff but dont actually describe how they managed to do it...
Kinda screams of "Wooohooo I can make a quick few dollars from this" .....Its just like all the therapists who keep giving ya the "See ya next week" spiel but dont actually sort your DP problem out....