Hathaway, 32, picked up the habit while filming her Oscar-nominated turn as an addict in 2008's Rachel Getting Married. She was able to quit once, later picked it back up again, and finally quit for a second time.
"I've quit," she told The New York Times Magazine. "I got hooked for a few years."
"I had a four-year break, and then actually when I was producing Song One, I started smoking again," she continued of her upcoming drama. "It’s easy to romanticize it when you haven’t done it in a while, but it’s actually pretty disgusting."
Though she is no longer a fan of "disgusting" cigarettes, the Interstellar actress spilled that she has a more favorable view of another widely popular smoking device.
"I don’t judge the vape," she admitted. "I know some people who used to be three-pack-a-day smokers, and I’d much prefer them having the vape. I don’t want to give them any excuse not to vape."
Hathaway went on to add that she has another substance that she is cutting out of her life. Asked about her New Year's resolutions, the Oscar winner admitted that there is one big one that she is focusing on.
"I have one, but I don’t want to mention it because it’s scaring me," the Les Miserables star began. "And it has nothing to do with pregnancy. But it’s not because of a problem. It’s just because why not: I’m going to really prioritize my health this year and not drink, at least not in January. I want to take a month off."
While she focused on her own self-improvement, Hathaway also found the time to offer up a little advice for another big star. Asked what words of wisdom she would give 2015 Oscars host Neil Patrick Harris, the actress, who disastrously hosted the awards show with James Franco in 2011, said simply, "Do the opposite of what I did, and you’ll be fine."
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