You can do it. I quit 3 years ago. I started smoking when I was thirteen and I'm 46 now. Don't start adding.I made up my mind and did it cold turkey. Now I can't stand the smell of a stinking cigarette. I probably couldn't afford them anymore either. It will be challenging but you will be glad you quit.
Just wanted to tell you also if you keep taking the Chantix make sure you come off gradually. A coworker of mine quit taking Chantix a few weeks ago and ended up missing week of work because it made him really sick.
Good Luck!