So after some terrible personal circumstances in March, I broke Carr's cardinal rule: don't ever accept or smoke another cigarette. Oops.
I was excited not just for myself, but other DS owners out there who might get something really good out of this.
It had been advertised, in its early rumor/preview stages, as simply a game of the Easy Way method invented by Carr. Little did I know it was adopted by Ubisoft of the My AnnoyingCoach series.
Uh-oh.
The main problem with this game is they felt the need to make it a "game." By which I mean, every main point is iterated by a mimi-game, which ranges from acceptable to absolutely maddening in quality. For example:

In the book, Carr tackles the conception that smokers "like the flavor" by basically saying, "No one does. They taste terrible, and here are some enlightening facts and metaphors that explain why." My Stop SmokingCoach instead forces you to play some mini-game wherein you have to find ingredients to various made up recipes such as "Tobacco Stew" and "Baked Ashtray." (I made that last one up, but it would fit right in.)
You do this by guessing. Will "Butt Glacé" have ashes? Nicotine? Tar? Carbon dioxide? There's no way to know, other than trying various combinations and hoping you don't lose so you can finally move on past this pointless torture.

I would really have liked if the game had no "playing a video game" elements at all, but instead had some kind of personal commitments calendar, video clips & cutscenes with testimonials and tips from people who quit with the same method, and a lot more text. I'd recommend avoiding this game and just buying Carr's book. Or, even spending the money on cigarettes – this game is as horrid as lung cancer.
(Surprisingly, it's rated E for Everyone!)