I, like many smokers, had tried to quit many times, trying everything available: gum, patches, pills, cold turkey, tapering off, etc. All had short-term success, three to 12 months. I discovered the E cig while purchasing normal cigs at my discount store.
But when reordering nicotine I noticed you could buy flavored vitamins also. I ordered some with the nicotine, and started alternating nicotine and the vitamins. After 30 days, I switched to all vitamins; about five weeks later, I put nicotine down and was done. Seventeen months later, I'm still smoke- and nicotine-free. I've been unemployed for over a year, and although tempted by stress, boredom, etc., but because I feel so much better since quitting, the temptation does not last long.
Having something to address the mechanical action associated with smoking helped me the most. My advice is to keep trying to quit, never stop trying. Find the key or keys that unlock your addiction. The difference in my overall feeling, as well the return of the operation of my senses affected by smoking is amazing. I can actually do things and not be winded or have to stop and rest. Everything smells and tastes better. Head colds that used to hang around for weeks, I get over in a week. Funny how much more level-headed I feel and act now than when I smoked. Most importantly, I feel good about myself.