I'm a nurse too and have heard both pros and cons about Chantix, but can tell you the FDA has black boxed it, which means it could be dangerous. I'd go along with the folks that used an incentive as motivation to quit. Find something of great valuse that you really want material, spiritual, it doesn't matter. Concentrate on your goal and how the tobacco would interfere with achieving it. Sounds like you are almost where you want to be. Remember to modify your behaviors as to avoid situations that promote the opportunity to indulge. That's my 2 cents.