A trigger is a learned cue that fires a craving automatically — a place, a person, a feeling, a time of day, a song, a payday. It works below conscious decision, which is why it ambushes you. The counters are: know yours, change the environment where you can, name the feeling when you cannot, and rehearse the moment before it arrives.
Use a substance often enough in the same context and the context itself starts the craving: the brain learns that couch + evening + show = dose, and fires the wanting when the cues assemble, whether or not you decide anything. This is classical conditioning — the same mechanism as Pavlov's dogs, and just as involuntary.
That is why a craving can arrive 'out of nowhere.' It did not. Something in the room lit the fuse, and the feeling arrived after. Triggers are also why willpower fails: you cannot out-decide a process that starts before deciding begins.
Places and things: the route past the store, the drawer with the kit. Counter: change the environment. Different route, cleared drawer, different chair. Feels small; works big.
People: the friend you used with, the colleague who pushes. Counter: the script, ready in advance, and one person on your side of the table.
Feelings: anger, boredom, loneliness, celebration. Counter: name it before it names you. An emotion with a name is measurably quieter, and a named feeling stops impersonating a craving.
Times: the hour, the day, the anniversary. Counter: expect it and schedule over it. A trigger you predicted is a wave you already know the shape of.
The strongest move is made before the trigger fires. An if-then plan — 'when X happens, I will do Y' — hands the cue a different job: instead of setting off the old move, it sets off the new one. Written once on a calm day, it runs when thinking is at its worst. That is the entire trick.
Marrow's walkthroughs take one hard situation at a time — the people, the hour, the feeling — and leave you with a plan in your own words.
If you are thinking of ending your life, or you are not safe where you are, stop reading and reach a person instead. These lines are free, confidential, and answered at any hour.