We may think there is willpower involved, but more likely... change is due to want power. Wanting the new addiction more than the old one. Wanting the new me in preference to the person I am now.
Die Treulosigkeit ist sozusagen eine Lüge der ganzen Person.
Bruyère, Jean de La
The Person is a bubble on Time's sea.
Wanting to be someone else is a waste of the person you are.