I smoked on and off for a few years (around 4 years) and had tried multiple times to quit. I started using an electronic cigarette (Rebuildable atomizer with a high end mod and larger battery, with PG and VG mix e-liquid) about a year ago. I was able to successfully for the first time in years quit smoking. The e-cig killed off all my cravings for cigarettes and allowed me to maintain a much healthier lifestyle. I will never go back to smoking cigarettes again.