For relapses are part of the process of learning a new distinction.
A distinction has two sides - so it distinguishes one side from the other.
But to learn a new distinction, we need to learn both sides of the new distinction.
So if you are learning to be a non-smoker, you need to learn what it is like to not smoke as against what it is like to smoke.
So relapses are an inherent and necessary part of learning not to smoke.
Just as 'relapses' are a necessary part of learning any new distinction.
And once you learn the distinction between smoking and non smoking, you can generalise this and learn how to make distinctions - you can learn how to learn.
Give a man a fish and you satisfy his hunger. But give a man a fishing line and he can catch his own fish.