It depends what kind of addiction you have; there are many addictions that are good and others that are bad.
I used to be addicted to video games and AO. It took me a while to get over it though. Video games had been my crack for about 10 years. I stopped playing video games when my PS2 broke. AO became my crack in 2005, in 2007 i kinda stopped coming because i have better stuff to do now. However i still come here; two times a week, sometimes i don't show up for a month.