I too tried a few times to quit and always went back to them, however it's been close to 4 years now for me and honestly I could not see myself going back this time. You can beat this addiction, use the resources available, if you have to talk to someone try the counselors if you feel you have to I am sure they have helped out many in the same situation.
If I can do it, Mike can do it, and so on, well then so can you.