I quit smoking in 2003. That was actually much easier than I feared it would be, but I think it had something to do with the fact that I wasn't around smokers that helped make it easier to quit.
I more or less quit drinking. I didn't so much quit as I've just not had any alcohol. I don't know that I've had anything to drink since New Year's; it just isn't something I've wanted to do.
Yet, I'm trying to quit drinking Coca-Cola, which is proving to be intensely difficult. I have noticed that the pains in my chest are greater when I've drunk Coca-cola; I think the caffeine might be the culprit, given the years of high blood pressure. But I love Coca-Cola. It's my best friend, my first true love, the only one who *really* understands me. Giving it up is like having a kidney ripped out.
So far, I've not been able to go more than about 40 hours between Cokes. This vice is tough.