I have to agree on the suggestibility thing.. it's a cop out. We can't avoid all triggers because they aren't actually external! What triggers us is our reactions to things around us.
However I believe in the law of attraction and that what we think about most shows up the most.. so when we focus our attention on recovery and healing, we find ourselves on that path.. For me, just me personally, sitting in a room with other alcoholics discussing how badly we want to drink, is going to put my mind on that frequency, and make maintaining my sobriety more difficult, because I am not on the path I need to be on, I am still on the path of alcoholism.