Or maybe it's because giving up smoking is apparently harder than giving up heroin.
But strangely, I don't really feel like smoking. I keep thinking about it all the time - sometimes intensely - but the thought of actually having a cigarette doesn't make me feel any better. The thought is starting to disgust me. The smell on my clothes; the heaviness in my lungs; the idle pacing as I'm ostracised outside in Auckland's terrible spring weather - none of it seems worth it.
I spent a few hours with my son this morning, just the two of us, while my partner slept. It felt great that I didn't have to go outside to fulfill my morning craving before coming back inside, riddled with guilt, carcinogens clinging to my clothes. I felt free, at peace.
I know quitting has its ups and downs. Tomorrow might be harder. But today, despite my body's protests, I felt at ease.
To take part in Stoptober, visit www.stoptober.nz
For help quitting, visit Quitline at www.quit.org.nz or phone 0800 778 778