If it's been 10 years man, I think do whatever it takes to stop. It's a new year, first day of the new year, why not start a fresh chapter of your life, a healthier chapter.
How bad are your lungs right now?
Immune system?
Health?
Life is short already, there's really no point in ending it sooner than it should because time flies past and sooner or later we'll be in our death beds regretting all the things we didn't do in life