“motivation for not eating meat and dairy is to maintain optimal health, not to rid myself of the obsession and compulsion that are the hallmark of addiction. If obsession and compulsion are the issue—smoking cigarettes, not being able to stop texting your toxic ex, self-harm—and you want to get past it, you need a Bright Line. If health is your objective, there is no evidence that perfect is better than “really good.” Seriously. You can comply with a health goal 95 percent of the time, and it will benefit you as much as 100 percent perfection.”