I am a marijuana addict and has been smoking for the last six years. I have tried to quit it many times but just can't stop it. I have become really annoyed and depressive. Why is it so hard to quit? I am looking for good rehab centres(http://www.bellwood.ca/ ) nearby like the bellwood health services and do the drug rehab program from there. If someone can make suggestions, it will be great. I just don't know which way to go.