Adele knew she had to do something about her serious smoking habit if she wanted to continue on with her singing career, and it's a good thing she did, because she's one of the most successful artists in the business at the moment. 

The 27-year-old singer admitted that she quit smoking four years ago when she realized that she was putting her life in danger. "If I'd carried on smoking, I'd probably have died from a smoking-related illness, and I think that's really bad," she told The Mirror in an interview released Friday. "If I was dying from lung cancer, I would have potentially given it to myself, and that wouldn't be something I'd be proud of."

The Grammy Award winner admitted that she was smoking 25 cigarettes a day when the doctors told her that if she hoped to continue her successful singing career, she would need to quit. In 2011, she was forced to cancel several shows when she underwent vocal cord surgery due to chronic throat hemorrhages, and this was a big eye-opener for her. Her 3-year-old son, Angelo, also had a lot to do with her decision to quit.

"I absolutely loved it, but it's not that f--king cool when I'm dying from a smoking-related illness and my kid is, like, devastated," she told Rolling Stone last month.

Life without cigarettes has obviously been doing her well because not only was her record-breaking album "25," which was only released last month, the best-selling album of the year, but she will be going on a 56-date North American tour starting July 2016, as HNGN previously reported. The tour will begin in Minnesota and will go until November in Mexico City. The tickets for the tour went on sale Thursday morning and sold out in just minutes.