It's worth understanding the mechanics of quitting for another reason too: most failed attempts to quit a habit don't actually reinforce the habit itself — they reinforce the belief that "I just don't have enough willpower. " That's a false conclusion. Failure usually says less about someone's character and more about the fact that a straight-ban strategy was used where working with the trigger and a replacement was actually needed. The difference between these two explanations decides whether the next attempt is more thoughtful, or just repeats the same mistakes.
Any established habit, good or bad, rests on a simple psychological chain: a trigger occurs — a specific situation, time, emotion, or place — followed by the action, which then delivers some kind of reward, even a brief one. The brain learns this link over time and eventually starts triggering the action almost automatically the moment the trigger shows up, before any conscious decision gets made.
1
Trigger
A specific situation, time, emotion, or place — the thing that starts the chain before any conscious decision.
2
Action
The habitual behavior itself — over time it starts happening almost automatically once the trigger appears.
3
Reward
Stress relief, a quick distraction, or some other pleasure, even a brief one — the part that locks the whole loop into the brain.
Banning the action outright leaves the trigger and the need for the reward untouched — the person still faces the same stress, boredom, or original situation, just without their usual way of dealing with it. That's exactly why a relapse after a few days of "pure willpower" isn't a sign of weak character — it's a predictable result of the root cause never having gone anywhere, while now there's the whole chain to resist instead of just one link.
A telling example is trying to quit late-night sweets purely through a ban: someone clears sweets out of the house, holds on for a week on sheer resolve, then relapses harder than usual — because the evening fatigue and the need for a quick payoff after a hard day never went away, they just lost their outlet. The ban handled availability, not the cause that drove the action.