lol, if all I had spoken was Chinese as my first language since I was small, decided not to speak it, then wanted to speak it again, I don't think I would have to learn it.
Deciding to stop doing something that is unnatural and harmful, CAN be done by merely deciding to stop doing it. Once the Big Plan of AVRT is made, the decision about never drinking again is made, there are no daily deciscions on the matter to BE made!