Your right it wasn't a bad habit it was IS an addiction
Fixed that for ya
You're always going to have the addiction. The question is "Are you going to feed that addiction?". Because we fed our bodies an addictive substance, we altered how the chemicals in our brains work. Nicotine takes the brain to a happy place through chemicals. That's why your body wants it so bad. It makes your brain release chemicals thinking it's happy and it digs its claws into us so we don't want to put it down.
While our lips are breaking down and poison courses through our veins, we still think its good. Hell, it kills many people eventually and they still want the drug EVEN THOUGH THEY KNOW IT IS KILLING THEM!
Addiction sucks and the minute that you believe you are no longer an addict is when you will fail again. We say "never again for any reason" with purpose: We need to know it. We need to believe it. We need to follow it.
It gets easier man. Post roll. You should have the instructions on how to. It's where we start our quits. It's what we base them on. Everything else is up to you. Do or do not. There is no try.