Fire the new routine on the original cue

Leave the trigger in place and attach the new behavior to it, every time.

Why it works

The cue is the most deeply wired and hardest-to-remove link in the loop, so trying to eliminate it is wasted effort. Keeping the existing trigger and routing it to the new routine lets the loop keep firing on a reliable signal — you redirect the energy instead of fighting to suppress the trigger, which is far cheaper and more durable.

How to do it

1. Identify the exact cue that reliably starts the old habit and do not try to remove it.
2. Pre-decide: "when [cue] happens, I will [new routine]" and rehearse it before the cue appears.
3. Run the new routine on that cue every single time until it becomes the default response.

Evidence

Aligns with implementation-intention research (specifying when/where the new response fires improves follow-through) and with the habit-loop model where stable cues drive automatic behavior. (rct)

Cue-bound substitution works best for habits with a clear discrete trigger; diffuse cues need to be narrowed first.

Sources

• Gollwitzer & Sheeran (2006), meta-analysis of implementation intentions, Advances in Experimental Social Psychology

Common mistake

Trying to avoid or erase the cue (no more coffee so no cigarette) instead of attaching a new routine to it, which leaves you white-knuckling the trigger.