My partner was able to stop via Wellbutrin...the second time around, at least. The first time it made her insufferably moody & cranky, so she stopped taking it (thank God!). The second time, she was able to stop.

I stopped by using economic logic. I figured out what I was spending a month (shocking!), & applied that amount towards a monthly payment on a new car. My budget was tight enough that I knew if I picked up the habit again I'd be unable to keep the car. That was incentive enough to get me over the hump & fight the occasional urges that followed.

Whatever means you use, good luck!