i can't say why he messed up but i can share my esp. i'm a recovering addict and it took me 5 or 6 rehab stays before i got sober then i had to follow set plan in order to stay sober. once sober 9yrs then relapse, 5 yrs then relapse and about 7yrs clean. its been a fight and still is, to stay clean. its a very hard habit to kick.
today i have to be conscience of the people, places and things that i involve myself with. a drug is a drug and usually can eventually lead an addict back to there drug of choice.