The filter actually is what holds the nicotine, the other part is really just a battery. Last time I quit I used one for about 2 or 3 months, it was pretty nice. I only started again when I had to quit smoking weed for a bit....I just craved real smoke I guess. But as long as you're not really weak and the ecig is quality, its pretty easy. I'm not smoking bud again for a job but once I'm employed I'm going to quit again, so good luck and don't be a weak puss, think positive, and remember.