People do change and you did

You picked up a belief somewhere, probably from watching adults: people do not really change. They clean up for a while, they grip hard, and eventually they go back to being whatever they always were. Nobody sat you down and taught you this. You absorbed it the way you absorb weather. The trouble with a belief taken in that way is that it never gets examined. It just runs quietly in the background, writing an ending for you before you have finished the middle.

The belief did come from something real. You have watched people white knuckle a change and revert, again and again, and the pattern held every time. But look closely at what those people were actually doing. They changed a behavior and left the self image completely untouched. Someone who still thinks of themselves as the person who does this is not changed, they are restrained, and restraint has a shelf life. What you watched fail was never change. It was containment, and containment always gives out eventually.

Which means what you need is a counterexample, and you happen to own one. There is a date in your own life after which the smoking stopped, and you are standing on the far side of it right now, reading this. That is not a plan or an intention. It is a fact with a date attached. Whatever you believe about people in general, you are holding evidence about one specific person, and general beliefs are supposed to bend when the evidence in your hand says otherwise.

So change the belief, not only the behavior. When the old line surfaces, that people never really change, answer it with the date instead of an argument. People do change. Here is when I did. God has always been in the business of making people new, and He does not do it by handing out a tighter grip. He does it by making the old thing stop fitting. You are not the exception to your own rule. You are the reason the rule was wrong.